laconism(n = noun.communication) laconicism - terseness of expression;
is a kind of terseness

1.  A vigorous, brief manner of expression; laconic style. [1913 Webster]

2.  An instance of laconic style or expression. [1913 Webster]

laconism, n.
1 brevity of speech.
2 a short pithy saying.

Etymology:
Gk lakonismos f. lakonizo behave like a Spartan: see LACONIC

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.