Webster's Revised Unabridged Dictionary · 1913

Malacopterygii

Malacopterygii , proper noun, plural

[New Latin, from Greek malako`s soft + pte`ryx wing, fin, from ptero`n feather.]

(Zoology) An order of fishes in which the fin rays, except the anterior ray of the pectoral and dorsal fins, are closely jointed, and not spiny. It includes the carp, pike, salmon, shad, etc. Called also Malacopteri.