/as then"ik/ , adj.
1. of, pertaining to, or characterized by asthenia; weak.
2. (of a physical type) having a slight build or slender body structure. Cf. athletic (def. 5), pyknic (def. 1).
n.
3. a person of the asthenic type.
[ 1780-90; asthenikós, equiv. to asthen- (see ASTHENIA) + -ikos -IC ]