• (British) IPA: /ˈkambɪəm/
• (GA) IPA: /ˈkeə̯m.biˌəm/, /ˈkæm.biˌəm/

cambium (plural cambiums)

1. (botany) A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems.
2. (anatomy) Periosteum, a membrane that covers the outer surface of bones
3. (obsolete) One of the humours formerly believed to nourish the bodily organs.
   • 1624, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy: […], 2nd edition, Oxford, Oxfordshire: Printed by John Lichfield and James Short, for Henry Cripps, OCLC 54573970 ↗:

     , Bk.I, New York, 2001, p.147:

     The radical or innate is daily supplied by nourishment, which some call cambium, and make those secondary humours of ros and gluten to maintain it […].

• Russian: ка́мбий
• Spanish: cambium