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单词 analemmatic
释义

analemmaticadj.

Brit. /ˌanəlɛˈmatɪk/, U.S. /ˌænələˈmædɪk/
Origin: Formed within English, by derivation. Etymons: analemma n., -atic suffix.
Etymology: < analemma n. + -atic suffix. Compare later lemmatic adj.
Designating a sundial comprising a movable gnomon (gnomon n. 1a) perpendicular to a dial plane with hour points arranged in an ellipse, the position of the gnomon at a particular time of year being determined by an analemma projection.For large dials, a person standing in the correct position can act as the gnomon.
ΚΠ
1805 D. Brewster Ferguson's Lect. Mech. (new ed.) II. 474 Turn it round till the stile of the analemmatic dial indicates the same hour with that of the horizontal one.
1845 Penny Cycl. Suppl. I. 159/1 Azimuth or analemmatic dial is one whose plane is parallel to the horizon, and whose gnomon, or stile, is moveable in a vertical position.
1900 H. K. F. Eden & E. Lloyd Gatty's Bk. Sun-dials (ed. 4) 370 A brass horizontal and analemmatic dial, 9¼ in. × 5¾ in.
2007 Royalauto Oct. 66/3 Kingston also boasts one the few analemmatic sundials in the world: it tells the time from the shadow created by your body.
This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021).
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adj.1805
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