| bicephalous | (adj) having two heads |
| acephalous | (adj) lacking a head or a clearly defined head, Example: acephalous worms |
| Bicephalous | a. [ Pref. bi- + cephalous: cf. F. bicéphale. ] Having two heads. [ 1913 Webster ] |
| Acephalous | a. [ See Acephal. ] [ 1913 Webster ] A false or acephalous structure of sentence. De Quincey. [ 1913 Webster ] |
| acephalous | ไร้หัว [ ยอดเกสรเพศเมีย ] [พฤกษศาสตร์ ๑๘ ก.พ. ๒๕๔๕] |