By Gaylon West.



Thayer: "the habitus, as comprising everything in a person which strikes the senses, the figure, bearing, discourse, actions, manner of life, etc."
Mickelson's: "Distinguished by being external form, or human body (not intrinsic)."

In English: "a diagrammatic presentation" - Merriam Webster

History of English: etymonline.com
    schema (n.) plural schemata, 1796, in Kantian philosophy ("a product of the imagination intermediary between an image and a concept"), from Greek skhema (see scheme (n.)). Meaning "diagrammatic representation" is from 1890; general sense of "hypothetical outline" is by 1939.
    scheme (n.) 1550s, "figure of speech," from Medieval Latin schema "shape, figure, form, appearance; figure of speech; posture in dancing," from Greek skhema (genitive skhematos) "figure, appearance, the nature of a thing," related to skhein "to get," and ekhein "to have, hold; be in a given state or condition," from PIE root *segh- "to hold, to hold in one's power, to have" (source also of Sanskrit sahate "he masters, overcomes," sahah "power, victory;" Avestan hazah "power, victory;" Greek ekhein "to have, hold;" Gothic sigis, Old High German sigu, Old Norse sigr, Old English sige "victory"). The sense "program of action" first is attested 1640s. Unfavorable overtones (selfish, devious) began to creep in early 18c. Meaning "complex unity of coordinated component elements" is from 1736. Color scheme is attested from 1884.
    schematic (adj.) "pertaining to schemes," 1701, from Latin stem of scheme (n.) + -ic. Noun meaning "diagram" is first attested 1929. Related: Schematical (1670s).