1. The aperture of a tube, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ofice,
• ofifice,
• oiffice,
• horrifice,
• orrifice,
• ofifce,
• prefice,
• offfice,
• orifaces,
• orice,
• oraface,
• oriface,
• orfice,
• orface,
• orafices,
• ofiice,
• profice,
• ocffice,
• ornifice,
• opffice

• orphic,
• orefice,
• orvis.

The adjective form of the word "orifice" is "orificial".

The plural of the "orifice" can be the "orifices".

The singular of the "orifice" can be the "orifice".