n.
Pronunciation: j ē - ' ä-m ə -tr ə d, ˌ j ē - ə - ' me-tr ə d
Function: noun
Etymology: ultimately from Greek ge ō metr ē s geometer, from ge ō metrein
Date: 1876
: any of a family (Geometridae) of usually medium-sized moths with large wings and larvae that are loopers
– geometrid adjective