doy·en 
(doi-ĕn, doiən, dwä-yăɴ)
(doi-ĕn, doiən, dwä-yăɴ)n.
A man who is the eldest or senior member of a group.
[Probably French, from Old French doien, from Late Latin decānus, chief of ten; see DEAN.]
- ultranationalism
- ultranationalist
- ultranationalistic
- ultrashort
- ultrasonic
- ultrasonically
- ultrasonics
- ultrasonogram
- ultrasonograph
- ultrasonographer
- ultrasonographic
- ultrasonography
- ultrasophisticated
- ultrasound
- ultrastructure
- ultrathin
- ultraviolet
- ultraviolet astronomy
- ultraviolet dropout
- ultraviolet photoemission spectroscopy
- ulu
- Ulugh Muztagh
- ululant
- ululate
- ululation