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Origin and history of perspicuity

perspicuity(n.)

late 15c., perspicuite, of things, "clearness, transparency" (a sense now obsolete); 1540s of words or expressions, "quality of being clear to the mind; quality by which the meaning can be seen through the words," from Old French perspicuité and directly from Latin perspicuitas "transparency, clearness," from perspicuus "transparent," from perspicere "look through, look closely at" (see perspective).

also from late 15c.

Entries linking to perspicuity

perspective(n.)

late 14c., perspectif, "the science of optics," from Old French perspective and directly from Medieval Latin perspectiva ars "science of optics," from fem. of perspectivus "of sight, optical" from Latin perspectus "clearly perceived," past participle of perspicere "inspect, look through, look closely at," from per "through" (from PIE root *per- (1) "forward," hence "through") + specere "look at" (from PIE root *spek- "to observe"). The English word is also attested from early 15c. as an adjective, "pertaining to the science of optics."

The sense of "the art of drawing solid objects on a flat surface so as to give appearance of distance or depth" is attested by 1590s, probably by influence of Italian prospettiva, an artists' term. The meaning "proper or just proportion, appropriate relation in the mind of the parts of a subject to one another" is recorded by c. 1600, hence the figurative meaning "mental outlook over time" (1762).

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    clarity
    c. 1300, clarte, clerte "brightness, radiance; glory, splendor," from Old French clerte, clartet (Modern French clarté) "clarity, brightness," from Latin claritas "brightness, splendor," also, of sounds, "clearness;" figuratively "celebrity, renown, fame," from clarare "make clea
    determination
    mid-14c., determinacioun, "decision, sentence in a suit at law, definite or authoritative judicial settlement," from Old French déterminacion "determination, settlement, definition" (14c.) and directly from Medieval Latin determinationem (nominative determinatio) "conclusion, bou
    epiphany
    early 14c., "festival of the manifestation of Christ to the gentiles" (celebrated Jan. 6; usually with a capital -E-), from Old French epiphanie, from Late Latin epiphania, neuter plural (taken as feminine singular), from late Greek epiphaneia "manifestation, striking appearance,
    tender
    "soft, easily injured," early 13c., from Old French tendre "soft, delicate; young" (11c.), from Latin tenerem (nominative tener) "soft, delicate; of tender age, youthful," from a derivative of PIE root *ten- "to stretch," on the notion of "stretched," hence "thin," hence "weak" o
    guild
    also gild, early 13c., yilde (spelling later influenced by Old Norse gildi "guild, brotherhood"), a semantic fusion of Old English gegield "guild, brotherhood," and gield "service, offering; payment, tribute; compensation," from Proto-Germanic *geldja- "payment, contribution" (so
    corporation
    mid-15c., corporacioun, "persons united in a body for some purpose," from such use in Anglo-Latin, from Late Latin corporationem (nominative corporatio) "assumption of a body" (used of the incarnation of Christ), noun of action from past-participle stem of Latin corporare "embody
    experiment
    mid-14c., "action of observing or testing; an observation, test, or trial;" also "piece of evidence or empirical proof; feat of magic or sorcery," from Old French esperment "practical knowledge, cunning; enchantment, magic spell; trial, proof, example; lesson, sign, indication,"
    siren
    mid-14c., in classical mythology, "sea nymph who by her singing lures sailors to their destruction," from Old French sereine (12c., Modern French sirène) and directly from Latin Siren (Late Latin Sirena), from Greek Seiren ["Odyssey," xii.39 ff.], one of the Seirēnes, the mythica
    Renaissance
    "great period of revival of classical-based art and learning in Europe that began in the fourteenth century," 1840, from French renaissance des lettres, from Old French renaissance, literally "rebirth," usually in a spiritual sense, from renastre "grow anew" (of plants), "be rebo
    ether
    late 14c., "upper regions of space," from Old French ether (12c.) and directly from Latin aether "the upper pure, bright air; sky, firmament," from Greek aithēr "upper air; bright, purer air; the sky" (opposed to aēr "the lower air"), from aithein "to burn, shine," from PIE *aidh

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