a. [f. prec. + -AL.] Of, or relating to, biology or (quot. 1874) ‘electro-biology.’
1859. G. Wilson, E. Forbes, ii. 43. Natural History … the biological half of natural science.
1874. Carpenter, Ment. Phys. (1876), 555. The psychical phenomena manifested during the persistence of the Biological state.
1877. W. Thomson, Voy. Challenger, I. i. 5. The physical and biological conditions of the sea-bottom.
