Main Entry: ex·press

Pronunciation: \ik-ˈspres, ek-\

Function: transitive verb

1 : to make known or exhibit by an expression
2 a : to force out by pressure <express milk manually or by electric pump> b : to subject to pressure so as to extract something <some pumps express one breast at a time—Paula Lynn Parks>
3 : to cause (a gene) to manifest its effects in the phenotype <a gene selectively expressed in lung tumors> ; also : to manifest or produce (a character, molecule, or effect) by a genetic process <individuals with the gene express symptoms of the disease> <differentially expressed proteins>