Origin of -ina1
< Latin -īna, feminine of -īnus
a suffix used in taxonomic names in biology: Euglenoidina; Nemertina.
Origin of -ina2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
fem. suffix in titles and names, from Latin -ina.
Online Etymology Dictionary, © 2010 Douglas Harper