asymmetric carbon atom
The traditional name (van't Hoff) for a carbon atom that is attached to four different entities (atoms or groups), e.g. Cabcd.
See also:
chirality centre
Source:
PAC, 1996,
68
, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2200
Blue Book, p. 480