GNOMON


Meaning of GNOMON in English

n.1 the rod or pin etc. on a sundial that shows the time by the position of its shadow.

2 Geom. the part of a parallelogram left when a similar parallelogram has been taken from its corner.

3 Astron. a column etc. used in observing the sun's meridian altitude.

Derivatives:

gnomonic adj.

Etymology: F or L gnomon f. Gk gnomon indicator etc. f. gignosko know

Oxford English vocab.      Оксфордский английский словарь.