The Collaborative International Dictionary of English v.0.48:
Biostatistics \Bi`o*sta*tis"tics\, n. [Gr. bi`os life + E. statistics.] (Biol.) Vital statistics. [1913 Webster]WordNet (r) 3.0 (2006):
biostatistics n 1: a branch of biology that studies biological phenomena and observations by means of statistical analysis [syn: biometrics, biometry, biostatistics]