scutum noun. ['skju:tǝm] Pl. -ta [-tǝ]. L18.
[Latin = oblong shield.]
1. (Usu. Scutum.) (The name of) a small constellation of the southern hemisphere, lying in the Milky Way between Aquila and Serpens; the Shield. Earliest in Scutum SOBIESKI. L18.

2. Zoology. A shieldlike dermal plate; a scute. L18.

3. Entomology. The second notal (dorsal) sclerite in each thoracic segment of an insect. M19.

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