Meaning of acanthology

ac•an•thol•o•gy

Pronunciation: (ak"un-thol'u-jē), [key]
— n. Biol.
  1. the study of spines, as in sea urchins or certain spiny-headed worms, particularly as they relate to taxonomic classification.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.