Dictionary.net

• Having the two anterior incisors large and prominent, the rest of the incisors and canines being smaller or absent.

1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.

• [Greek] Having two anterior incisors large and prominent, the rest of incisors and canines being smaller or absent.

1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth