What is "acanthion"

n. (context medicine English) A point lying near the base of the nose; specifically, the point at the base of the anterior nasal spine that lies on the mesial line; tip of the anterior nasal spine.

n. the craniometric point at the anterior extremity of the intermaxillary suture

Acanthion is a subgenus of Old World porcupines in the genus Hystrix. It contains two species, H. javanica and H. brachyura, the smaller species with comparatively smaller nasals. The extant species have only one black ring or coloured part on the quills.