Dictionary

fieldmark en · NOUN

Etymology

From field + mark.

Meanings

1. A key, observable feature that is useful for identification of species in the field.
   • Fieldmarks are its color, its forehead and a very much back-curving dorsal fin. 1967, Eleanore Devine and Martha Clark, The Dolphin Smile: Twenty-nine Centuries of Dolphin Lore, Macmillan, page 240:

Forms