Adynamic \Ad`y*nam"ic\, a. [Cf. F. adynamique. See Adynamy.]

1. (Med.) Pertaining to, or characterized by, debility of the vital powers; weak.

2. (Physics) Characterized by the absence of power or force.

Adynamic fevers, malignant or putrid fevers attended with great muscular debility.

Source: Webster's Revised Unabridged Dictionary (1913)