hy·phen 
(hīfən)
(hīfən)n.
A punctuation mark ( - ) used between the parts of a compound word or name or between the syllables of a word, especially when divided at the end of a line of text.
tr.v. hy·phened, hy·phen·ing, hy·phens
To hyphenate.
[Late Latin, from Greek huphen, a sign indicating a compound or two words which are to be read as one, from huph' hen, in one : hupo, under; see HYPO- + hen, neuter of heis, one; see sem-1 in the Appendix of Indo-European roots.]
- primary atypical pneumonia
- primary biliary cirrhosis
- primary care
- primary cell
- primary coil
- primary color
- primary consumer
- primary election
- primary growth
- primary meristem
- primary root
- primary school
- primary stress
- primary structure
- primary succession
- primary syphilis
- primary tissue
- primary tooth
- primary verb
- primary xylem
- primate
- primatial
- primatological
- primatologist
- primatology