The date before which a document must have been written. / The date before which an archaeological artifact must have been deposited.

(medicine) A lenitive; an emollient.

Synonym of tobogganer

(organic chemistry) The cytotoxic glucosyl derivative of sphingosine (2S,3R,4E)-2-amino-3-hydroxy-4-octadecen-1-yl β-D-glucopyranoside