The saturated hydrides of tervalent antimony, having the general formula $\ce{Sb_{n}H_{n+2}}$. Hydrocarbyl derivatives of $\ce{SbH3}$ belong to the class stibines.
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1367 [Terms] [Paper]