Meaning ofgnomonin English

Noun

1. a rod or pillar to tell time by shadow
   The ancient sundial used a gnomon to indicate time.
2. a pillar to calculate sun altitude; determine latitude
   Astronomers use a gnomon to measure the sun's altitude.
3. a geometric figure formed by removing a parallelogram
   In geometry, a gnomon is formed by removing a parallelogram from a larger parallelogram.