Sustentative \Sus"ten*ta*tive\, a. Adapted to sustain, strengthen, or corroborate; as, sustentative citations or quotations. [1913 Webster]

Sustentative functions (Physiol.), those functions of the body which affect its material composition and thus determine its mass. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Sustentative \Sus"ten*ta*tive\, a. Adapted to sustain, strengthen, or corroborate; as, sustentative citations or quotations.

Sustentative functions (Physiol.), those functions of the body which affect its material composition and thus determine its mass.

Source: Webster's Revised Unabridged Dictionary (1913)