di·hy·drox·y·phen·yl·al·a·nine 
(dī′hī-drŏk′sē-fĕn′əl-ălə-nēn′, -fē′nəl-)
(dī′hī-drŏk′sē-fĕn′əl-ălə-nēn′, -fē′nəl-)n.
Dopa.
- quarterage
- quarterback
- quarterback sneak
- quarter day
- quarterdeck
- quarterfinal
- quarterfinalist
- quarter horse
- quarter-hour
- quarter hour
- quarterly
- quartermaster
- quartern
- quarter note
- quarter-phase
- quarterpipe
- quarter rest
- quartersaw
- quarter section
- quarterstaff
- quartertone
- quartet
- quartette
- quartic
- quartile