Definition of phacopid in English:

phacopid

adjective

  • Of or relating to the family Phacopidae of trilobites, the members of which had large compound eyes and a rounded glabella which widened frontwards.

noun

  • A trilobite of the family Phacopidae.

Origin

Early 20th century; earliest use found in Ottawa Naturalist. From scientific Latin phacop-, taken as stem of Phacops, genus name (H. F. Emmrich De Trilobitis 16; from ancient Greek ϕακός lens + ὤψ face, eye: see -ops) + -id, after Phacopidae, family name.

Pronunciation

phacopid

/ˈfakə(ʊ)pɪd/