Which combining form means lip?

• A. phot/o
• B. lamin/o
• C. gno/o
• D. cheil/o

Answer: (D)

The enough concept here is recognizing the meaning carried by combining forms. cheil/o means lip, from the Greek cheilos, and it appears in terms like cheilitis (inflammation of the lip) or cheiloplasty (surgical repair of the lip). The other forms do not denote lip: phot/o means light (as in photophobia or photography-related terms); lamin/o refers to a plate or lamina (as in anatomical structures of the vertebra); gno/o relates to knowledge or knowing (as in prognosis or agnosis). So the combining form for lip is cheil/o.