ana siffanta "geometer" a matsayin: masanin lissafi wanda ya kware a fannin ilmin lissafimutumin da ya yi aiki ko kuma ya kware kan aikin geometry ko gini na geometric Gaba ɗaya, geometer shine wanda ke nazari, aiki, ko kuma yana da ƙwarewa a reshen lissafin lissafi wanda aka sani da geometry, wanda ke hulɗa da kaddarorin, alaƙa, da ma'aunin maki, layi, kusurwoyi, saman, da daskararru a sararin samaniya.