compendious(s = adj.all) compact, succinct, summary - briefly giving the gist of something; "a short and compendious book"; "a compact style is brief and pithy"; "succinct comparisons"; "a summary formulation of a wide-ranging subject"
Derived form noun compendium₂

   Containing the substance or general principles of a subject or work in a narrow compass; abridged; summarized. [1913 Webster]
"More compendious and expeditious ways." [1913 Webster]
"Three things be required in the oration of a man having authority -- that it be compendious, sententious, and delectable."

compendious, adj. (esp. of a book etc.) comprehensive but fairly brief.

Derivative:
compendiously adv. compendiousness n.

Etymology:
ME f. OF compendieux f. L compendiosus brief (as COMPENDIUM)

N  conciseness, brevity, the soul of wit, laconism, Tacitus, ellipsis, syncope, abridgment, compression, epitome, monostich, brunch word, portmanteau word, concise, brief, short, terse, close, to the point, exact, neat, compact, compressed, condensed, pointed, laconic, curt, pithy, trenchant, summary, pregnant, compendious, succinct, elliptical, epigrammatic, quaint, crisp, sententious, concisely, briefly, summarily, in brief, in short, in a word, in a few words, for shortness sake, to come to the point, to make a long story short, to cut the matter short, to be brief, it comes to this, the long and the short of it is, brevis esse laboro obscurus fio.

N  compend, compendium, abstract, precis, epitome, multum in parvo, analysis, pandect, digest, sum and substance, brief, abridgment, summary, apercu, draft, minute, note, excerpt, synopsis, textbook, conspectus, outlines, syllabus, contents, heads, prospectus, album, scrap book, note book, memorandum book, commonplace book, extracts, excerpta, cuttings, fugitive pieces, fugitive writing, spicilegium, flowers, anthology, collectanea, analecta, compilation, recapitulation, resume, review, abbreviation, abbreviature, contraction, shortening, compression, compendious, synoptic, analectic, abrege, abridged, variorum, in short, in epitome, in substance, in few words, it lies in a nutshell.

N  shortness, brevity, littleness, a span, shortening, abbreviation, abbreviature, abridgment, concision, retrenchment, curtailment, decurtation, reduction, epitome, elision, ellipsis, conciseness, abridger, epitomist, epitomizer, short, brief, curt, compendious, compact, stubby, scrimp, shorn, stubbed, stumpy, thickset, pug, chunky, decurtate, retrousse, stocky, squab, squabby, squat, dumpy, little, curtailed of its fair proportions, short by, oblate, concise, summary, shortly, in short.