spinous

(spī'nəs)

1. Resembling a spine or thorn.
2. Having spines or similar projections; spiny.

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Relating to, shaped like, or having a spine or spines.

Pertaining to or like a spine.

• dorsal s. processes — processes of the vertebrae that underlie the backline of the animal.
• s. ear tick — see otobius megnini.
• s. layer — see stratum spinosum.