1.  indication(n = noun.communication) indicant - something that serves to indicate or suggest; "an indication of foul play"; "indications of strain"; "symptoms are the prime indicants of disease"
is a kind of communication
has particulars: gesture, evidence, shadow, tincture, trace, vestige, symptom, signalisation, signalization, pointing out, manifestation, mark, print, glimpse, forerunner, harbinger, herald, precursor, predecessor, clue, hint, smoke
Derived forms verb indicate₄, verb indicate₁

2.  indication(n = noun.communication) denotation - the act of indicating or pointing out by name;
is a kind of naming
Derived form verb indicate₂

3.  indication(n = noun.communication) - (medicine) a reason to prescribe a drug or perform a procedure; "the presence of bacterial infection was an indication for the use of antibiotics"
is a kind of reason
Antonym: contraindication
Derived forms verb indicate₁, verb indicate₅

4.  indication(n = noun.communication) - something (as a course of action) that is indicated as expedient or necessary; "there were indications that it was time to leave"
is a kind of advice
Derived forms verb indicate₄, verb indicate₅

5.  indication(n = noun.cognition) meter reading, reading - a datum about some physical state that is presented to a user by a meter or similar instrument; "he could not believe the meter reading"; "the barometer gave clear indications of an approaching storm"
is a kind of data point, datum
has particulars: clock time, time, miles per hour, mph
Derived form verb indicate₄

1.  Act of pointing out or indicating. [1913 Webster]

2.  That which serves to indicate or point out; mark; token; sign; symptom; evidence. [1913 Webster]
"The frequent stops they make in the most convenient places are plain indications of their weariness." [1913 Webster]

3.  Discovery made; information. Bentley. [1913 Webster]

4.  Explanation; display. Bacon. [1913 Webster]

5.  Any symptom or occurrence in a disease, which serves to direct to suitable remedies. Opposite of contraindication.

indication, n.
1 the act or an instance of indicating.
2 something indicated or suggested.
3 a reading given by a gauge or instrument.

Etymology:
F f. L indicatio (as INDICATE)

N  class, division, category, categorema, head, order, section, department, subdepartment, province, domain, kind, sort, genus, species, variety, family, order, kingdom, race, tribe, caste, sept, clan, breed, type, subtype, kit, sect, set, subset, assortment, feather, kidney, suit, range, gender, sex, kin, manner, description, denomination, designation, rubric, character, stamp predicament, indication, particularization, selection, specification, similarity.

N  attention, mindfulness, presence of mind, intentness, intentiveness, alertness, thought, advertence, advertency, observance, observation, consideration, reflection, perpension, heed, heedfulness, particularity, notice, regard, circumspection, diligence, study, scrutiny inspection, introspection, revision, revisal, active application, diligent application, exclusive application, minute application, close application, intense application, deep application, profound application, abstract application, labored application, deliberate application, active attention, diligent attention, exclusive attention, minute attention, close attention, intense attention, deep attention, profound attention, abstract attention, labored attention, deliberate attention, active thought, diligent thought, exclusive thought, minute thought, close thought, intense thought, deep thought, profound thought, abstract thought, labored thought, deliberate thought, active study, diligent study, exclusive study, minute study, close study, intense study, deep study, profound study, abstract study, labored study, deliberate study, minuteness, attention to detail, absorption of mind, indication, calling attention to, attentive, mindful, observant, regardful, alive to, awake to, observing, alert, open-eyed, intent on, taken up with, occupied with, engaged in, engrossed in, wrapped in, absorbed, rapt, transfixed, riveted, mesmerized, hypnotized, glued to (the TV, the window, a book), breathless, preoccupied, watchful, breathless, undistracted, upon the stretch, on the watch, steadfast, interesting, engrossing, mesmerizing, riveting, Int, see!, look, look here, look you, look to it!, mark!, lo!, behold!, soho!, hark, hark ye!, mind!, halloo!, observe!, lo and behold!, attention!, nota bene, N, B, note well, I'd have you to know, notice!, O yes!, Oyez!, dekko!, ecco!, yoho!, this is to give notice, these are to give notice, dictum sapienti sat est, a word to the wise is sufficient, finem respice, Attention! Now hear this! Oyez!, Achtung, vnimanie, chui.

N  evidence, facts, premises, data, praecognita, grounds, indication, criterion, testimony, testification, expert testimony, attestation, deposition, examination, admission, authority, warrant, credential, diploma, voucher, certificate, doquet, docket, testamur, record, document, pi ce justificative, deed, warranty, signature, seal, exhibit, material evidence, objective evidence, witness, indicator, hostile witness, eyewitness, earwitness, material witness, state's evidence, deponent, sponsor, cojuror, oral evidence, documentary evidence, hearsay evidence, external evidence, extrinsic evidence, internal evidence, intrinsic evidence, circumstantial evidence, cumulative evidence, ex parte evidence, presumptive evidence, collateral evidence, constructive evidence, proof, evidence in chief, secondary evidence, confirmation, corroboration, support, ratification, authentication, compurgation, wager of law, comprobation, citation, reference, legal research, literature search (experiment), showing, indicative, indicatory, deducible, grounded on, founded on, based on, corroborative, confirmatory, by inference, according to, witness, a fortiori, still more, still less, raison de plus, in corroboration, of, valeat quantum, under seal, under one's hand and seal, dictum de dicto, mise en evidence.

N  manifestation, plainness, plain speaking, expression, showing, exposition, demonstration, exhibition, production, display, show, showing off, premonstration, exhibit, indication, publicity, disclosure, openness panchement, evidence, manifest, apparent, salient, striking, demonstrative, prominent, in the foreground, notable, pronounced, flagrant, notorious, arrant, stark staring, unshaded, glaring, defined, definite, distinct, conspicuous, obvious, evident, unmistakable, indubitable, not to be mistaken, palpable, self-evident, autoptical, intelligible, plain, clear, clear as day, clear as daylight, clear as noonday, plain as a pike staff, plain as the sun at noon-day, plain as the nose on one's face, plain as the way to parish church, explicit, overt, patent, express, ostensible, open, open as day, naked, bare, literal, downright, undisguised, exoteric, unreserved, frank, plain-spoken, candid (veracious), barefaced, manifested, disclosed, capable of being shown, producible, inconcealable, unconcealable, no secret, manifestly, openly, before one's eyes, under one's nose, to one's face, face to face, above board, cartes sur table, on the stage, in open court, in the open streets, in market overt, in the face of day, face of heaven, in broad daylight, in open daylight, without reserve, at first blush, prima facie, on the face of, in set terms, cela saute aux yeux, he that runs may read, you can see it with half an eye, it needs no ghost to tell us, the meaning lies on the surface, cela va sans dire, res ipsa loquitur, clothing the palpable and familiar, fari quae sentiat, volto sciolto i pensieri stretti, you don't need a weatherman to know which way the.

N  indication, symbolism, symbolization, semiology, semiotics, semeiology, semeiotics, Zeitgeist, characteristic, diagnostic, lineament, feature, trait, fingerprint, voiceprint, footprint, noseprint, cloven hoof, footfall, recognition (memory), diagnostic, divining rod, detector, sign, symbol, index, indice, indicator, point, pointer, exponent, note, token, symptom, dollar sign, dollar mark, type, figure, emblem, cipher, device, representation, epigraph, motto, posy, gesture, gesticulation, pantomime, wink, glance, leer, nod, shrug, beck, touch, nudge, dactylology, dactylonomy, freemasonry, telegraphy, chirology, byplay, dumb show, cue, hint, clue, clew, key, scent, signal, signal post, rocket, blue light, watch fire, watch tower, telegraph, semaphore, flagstaff, cresset, fiery cross, calumet, heliograph, guidon, headlight, mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick, print, imprint, impress, impression, keyboard symbols, printing symbols, red letter, italics, sublineation, underlining, bold font, jotting, note, annotation, reference, blaze, cedilla, guillemets, hachure, quotation marks, ", double quotes, " ", parentheses, "( )", brackets, "", braces, "", left arrow, "<", right arrow, ">", forward slash, "/", backward slash, "\", exclamation point, "!", commercial at, "@", pound sign, "#", percent sign, "%", carat, "", ampersand, "&", asterisk, "*", hyphen, "-", dash, "-", "_", em dash, "--", plus sign, "+", equals sign, "=", question mark, "?", period, ", ", semicolon, ", ", colon, ":", comma, ", ", apostrophe, "'", single quote, "'", tilde, "~", badge, criterion, countercheck, countermark, countersign, counterfoil, duplicate, tally, label, ticket, billet, letter, counter, check, chip, chop, dib, totem, tessera, card, bill, witness, voucher, stamp, cacher, trade mark, Hall mark, signature, mark, autograph, autography, attestation, hand, hand writing, sign manual, cipher, seal, sigil, signet, hand and seal, paraph, brand, superscription, indorsement, endorsement, password, watchword, catchword, security card, pass, passkey, credentials, open sesame, timbrology, mot de passe, mot du guet, pass-parole, shibboleth, title, heading, docket, address card, visiting card, carte de visite, insignia, banner, banneret, bannerol, bandrol, flag, colors, streamer, standard, eagle, labarum, oriflamb, oriflamme, figurehead, ensign, pennon, pennant, pendant, burgee, blue Peter, jack, ancient, gonfalon, union jack, banderole, old glory, quarantine flag, vexillum, yellow-flag, yellow jack, tricolor, stars and stripes, bunting, heraldry, crest, coat of arms, arms, armorial bearings, hatchment, escutcheon, scutcheon, shield, supporters, livery, uniform, cockade, epaulet, chevron, garland, love knot, favor, beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock, guidepost, handpost, fingerpost, directing post, signpost, pillars of Hercules, pharos, bale-fire, beacon-fire, l'etoile du Nord, landmark, seamark, lighthouse, balize, polestar, loadstar, lodestar, cynosure, guide, address, direction, name, sign, signboard, warning, omen, prefigurement, trace, record, warning &c, alarm, scepter, trophy, gauge, milestone, milepost, brand, fool's cap, check, telltale, test, mileage ticket, milliary, notification, advertisement, word of command, call, bugle call, trumpet call, bell, alarum, cry, battle cry, rallying cry, angelus, reveille, sacring bell, sanctus bell, exposition &c (explanation), proof, pattern, indicating, indicative, indicatory, denotative, connotative, diacritical, representative, typical, symbolic, pantomimic, pathognomonic, symptomatic, characteristic, demonstrative, diagnostic, exponential, emblematic, armorial, individual, known by, recognizable by, indicated, pointed, marked, denotable, indelible, in token of, symbolically, in dumb show, ecce signum, ex ungue leonem, ex pede Herculem, vide ut supra, vultus ariete fortior.