The definition of geometry is a branch of math that focuses on the measurement and relationship of lines, angles, surfaces, solids and points.(noun)
An example of geometry is the calculation of a triangle's angles.
See geometry in Webster's New World College Dictionary
noun pl. geometries
Origin: ME geometrie < OFr < L geometria < Gr geōmetria < geōmetrein, to measure the earth < gē, earth + metria, measurement < metrein, to measure: for IE base, see meter
See geometry in American Heritage Dictionary 4
noun pl. ge·om·e·tries
Origin: Middle English geometrie
Origin: , from Old French
Origin: , from Latin geōmetria
Origin: , from Greek geōmetriā
Origin: , from geōmetrein, to measure land
Origin: : geō-, geo-
Origin: + metron, measure; see mē-2 in Indo-European roots.
Learn more about geometry