1.  scientific(a = adj.pert) - of or relating to the practice of science; "scientific journals"

2.  scientific(a = adj.all) - conforming with the principles or methods used in science; "a scientific approach"
Antonym: unscientific

1.  Of or pertaining to science; used in science; as, scientific principles; scientific apparatus; scientific observations. [1913 Webster]

2.  Agreeing with, or depending on, the rules or principles of science; as, a scientific classification; a scientific arrangement of fossils. [1913 Webster]

3.  Having a knowledge of science, or of a science; evincing science or systematic knowledge; as, a scientific chemist; a scientific reasoner; a scientific argument. [1913 Webster]
"Bossuet is as scientific in the structure of his sentences." [1913 Webster]

scientific, adj.
1 a (of an investigation etc.) according to rules laid down in exact science for performing observations and testing the soundness of conclusions. b systematic, accurate.
2 used in, engaged in, or relating to (esp. natural) science (scientific discoveries; scientific terminology).
3 assisted by expert knowledge.

Derivative:
scientifically adv.

Etymology:
F scientifique or LL scientificus (as SCIENCE)

N  skill, skillfulness, address, dexterity, dexterousness, adroitness, expertness, proficiency, competence, technical competence, craft, callidity, facility, knack, trick, sleight, mastery, mastership, excellence, panurgy, ambidexterity, ambidextrousness, sleight of hand, seamanship, airmanship, marksmanship, horsemanship, rope-dancing, accomplishment, acquirement, attainment, art, science, technicality, technology, practical knowledge, technical knowledge, knowledge of the world, world wisdom, savoir faire, tact, mother wit, discretion, finesse, craftiness, management, self-help, cleverness, talent, ability, ingenuity, capacity, parts, talents, faculty, endowment, forte, turn, gift, genius, intelligence, sharpness, readiness, invention, aptness, aptitude, turn for, capacity for, genius for, felicity, capability, curiosa felicitas, qualification, habilitation, proficient, masterpiece, coup de maitre, chef d'euvre, tour de force, good stroke, skillful, dexterous, adroit, expert, apt, handy, quick, deft, ready, gain, slick, smart, proficient, good at, up to, at home in, master of, a good hand at, au fait, thoroughbred, masterly, crack, accomplished, conversant, experienced, practiced, skilled, hackneyed, up in, well up in, in practice, in proper cue, competent, efficient, qualified, capable, fitted, fit for, up to the mark, trained, initiated, prepared, primed, finished, clever, cute, able, ingenious, felicitous, gifted, talented, endowed, inventive, shrewd, sharp, on the ball, cunning, alive to, up to snuff, not to be caught with chaff, discreet, neat-handed, fine-fingered, nimble-fingered, ambidextrous, sure- footed, cut out for, fitted for, technical, artistic, scientific, daedalian, shipshape, workman- like, business-like, statesman-like, skillfully, well, artistically, with skill, with consummate skill, secundum artem, suo Marte, to the best of one's abilities, ars celare artem, artes honorabit, celui qui veut celui-la peut, c'est une grande habilite que de savoir cacher son, expertus metuit, es bildet ein Talent sich in der Stille sich ein C, heart to conceive, the understanding to direct, or the hand to execute, if you have lemons, make lemonade.

N  truth, fact, reality, plain fact, plain matter of fact, nature, truth, verity, gospel, gospel truth, God's honest truth, orthodoxy, authenticity, veracity, correctness, correctitude, accuracy, exactitude, exactness, preciseness, precision, delicacy, rigor, mathematical precision, punctuality, clockwork precision, conformity to rule, nicety, orthology, ipsissima verba, realism, plain truth, honest truth, sober truth, naked truth, unalloyed truth, unqualified truth, stern truth, exact truth, intrinsic truth, nuda veritas, the very thing, not an illusion, real Simon Pure, unvarnished tale, unvarnished truth, the truth the whole truth and nothing but the trut, just the thing, real, actual, veritable, true, right, correct, certain, substantially true, categorically true, definitively true, true to the letter, true as gospel, unimpeachable, veracious, unreconfuted, unconfuted, unideal, unimagined, realistic, exact, accurate, definite, precise, well-defined, just, just so, so, strict, severe, close, literal, rigid, rigorous, scrupulous, religiously exact, punctual, mathematical, scientific, faithful, constant, unerring, curious, particular, nice, delicate, fine, clean-cut, clear-cut, verified, empirically true, experimentally verified, substantiated, proven (demonstrated), rigorously true, unquestionably true, true by definition, genuine, authentic, legitimate, orthodox, official, ex officio, pure, natural, sound, sterling, unsophisticated, unadulterated, unvarnished, unalloyed, uncolored, in its true colors, pukka, well-grounded, well founded, solid, substantial, tangible, valid, undistorted, undisguised, unaffected, unexaggerated, unromantic, unflattering, truly, verily, indeed, really, in reality, with truth, certainly, actually, in effect, exactly, ad amussim, verbatim, verbatim et literatim, word for word, literally, literatim, totidem vervis, sic, to the letter, chapter and verse, ipsissimis verbis, ad unguem, to an inch, to a nicety, to a hair, to a tittle, to a turn, to a T, au pied de la lettre, neither more nor less, in every respect, in all respects, sous tous les rapports, at any rate, at all events, strictly speaking, the truth is, the fact is, rem acu tetigisti, en suivant la verite, ex facto jus oritur, la verita e figlia del empo, locos y ninos dicen la verdad, crazy people and children tell the truth, nihil est veritatis luce dulcius, veritas nunquam perit, veritatem dies aperit, the truth, the whole truth, and nothing but the truth, just the facts, ma'am, just the facts.

scientific agriculture, scientific discipline, scientific fact, scientific instrument, scientific knowledge, scientific method, scientific research, scientific theory, united nations educational scientific and cultural