Sphenisciformes /sfē-nis-i-förˈmēz/ plural noun

The penguin order of birds

Sphenisˈcus /-kəs/ noun

The jackass-penguin genus

Sphēˈnodon noun

1. (Gr odous, odontos a tooth) the reptilian genus, also known as Hatteria, to which the tuatara (qv) belongs
2. (without cap) an animal of this genus

sphēˈnogram noun

A cuneiform character

sphēˈnoid adjective

Wedge-shaped, applied to a set of bones at the base of the skull

1. A sphenoid bone
2. A wedge-shaped crystal form of four triangular faces

sphenoidˈal adjective