Any of various moths of the family Geometridae, having caterpillars commonly known as inchworms that move by looping the body in alternate contractions and expansions.
Any of a large family (Geometridae) of moths, typically having broad wings: the slender larvae are called measuring worms, inchworms, etc.
Origin of geometrid
- From New Latin Geōmetridae family name from Latin geōmetrēs geometrician, land-measurer (the family being so named because the caterpillars seem to measure the surface on which they crawl by the length of their bodies) from Greek from geōmetrein to measure land geometry
From American Heritage Dictionary of the English Language, 5th Edition