# Definition of trigonum

**1.** trigon [ n ] a triangular lyre of ancient Greece and Rome

**Synonyms**trigon

**Related Terms**lyre

**2.** trigon [ n ] (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees

**Synonyms**triplicity trigon

**Related Terms**trio astrology

**3.** trigon [ n ] a three-sided polygon

**Synonyms**triangle trilateral trigon

**Related Terms**polygon wedge scalene_triangle isosceles_triangle acute_triangle obtuse_triangle right_triangle equilateral_triangle oblique_triangle triangulate

### Similar Spelling

trigontrogon

Trogium

trigonal

Trigonella

truism

treason