thorn(redirected from Þorn)
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Related to Þorn: THTH
In anatomy, a thornlike or spinous structure.
Farlex Partner Medical Dictionary © Farlex 2012
thorna sharply pointed woody plant structure formed from a modified branch.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005