| CYCLOSTOMES | • cyclostomes n. Plural of cyclostome. • CYCLOSTOME n. the lamprey. |
| DEUTEROSTOMES | • deuterostomes n. Plural of deuterostome. • DEUTEROSTOME n. any of a major division of the animal kingdom that includes the bilaterally symmetrical animals. |
| DISTOMES | • DISTOME n. a parasitic flatworm. |
| EPISTOMES | • epistomes n. Plural of epistome. • EPISTOME n. a structure over the mouth of some invertebrates. |
| GNATHOSTOMES | • gnathostomes n. Plural of gnathostome. • GNATHOSTOME n. any vertebrate of the superclass Gnathostomata, having a mouth with jaws, including all vertebrates except the agnathans. |
| HYPOSTOMES | • hypostomes n. Plural of hypostome. • HYPOSTOME n. any of several structures associated with the mouth in different invertebrates. |
| MELASTOMES | • melastomes n. Plural of melastome. • MELASTOME n. a tropical flowering plant of the myrtle family. |
| MESTOMES | • MESTOME n. biological conducting tissue, also MESTOM. |
| NEPHROSTOMES | • nephrostomes n. Plural of nephrostome. • NEPHROSTOME n. the funnel-shaped coelomic opening of a typical nephridium. |
| PERISTOMES | • peristomes n. Plural of peristome. • PERISTOME n. the area, or a structure, surrounding a mouth. |
| PLAGIOSTOMES | • plagiostomes n. Plural of plagiostome. • PLAGIOSTOME n. any fish families of the Plagiostomata or Plagiostomi, the cross-mouthed fishes, sharks and ray. |
| PROTOSTOMES | • protostomes n. Plural of protostome. • PROTOSTOME n. a major group of bilateral metazoan animals, that includes mollusks and annelids. |
| TELEOSTOMES | • teleostomes n. Plural of teleostome. • TELEOSTOME n. a fish with membrane bones in the skull, jaws etc., as with any ordinary fish except skates and rays. |