a group of stamps that differ in color, value, or design but are printed together on the same sheet and are collected without separating the stamps.
Also, se tenant.
Origin
1910-15; < French: literally, standing, remaining, holding together, equivalent to se 3rd singular reflexive pronoun + tenant present participle of tenir to hold (see tenant)
British Dictionary definitions for se tenant
se tenant
/sə tənɑ̃/
adjective
1.
denoting two postage stamps of different face values and sometimes of different designs in an unseparated pair