pro·cam·bi·um 
(prō-kămbē-əm)
(prō-kămbē-əm)n.
The primary meristem that gives rise to vascular tissue.
pro·cambi·al (-əl) adj.
- quadriplegia
- quadriplegic
- quadrivalence
- quadrivalency
- quadrivalent
- quadrivium
- quadroon
- quadru-
- quadru-
- quadrumanal
- quadrumanous
- quadrumvirate
- quadruped
- quadruped
- quadrupedal
- quadrupedalism
- quadrupedally
- quadruple
- quadruplet
- quadruple witching hour
- quadruplicate
- quadruplicately
- quadruplication
- quadruply
- quaestor