Lewis & Short

crēmentum, i, n. [cresco].

  1. I. Growth, increase (very rare): corporum, Varr. ap. Non. p. 169, 14: lunae, Plin. 11, 37, 55, § 149 (incrementum, Sillig).
  2. II. Crementum est semen masculi, Isid. Orig. 9, 5, 5; 11, 1, 15.