| OSTIA | • ostia n. Plural of ostium. • Ostia prop.n. (Historical) A port and town on the Tiber in Italia, Roman Empire, the harbour of ancient Rome. • Ostia prop.n. A modern refounding of the ancient town at the mouth of the Tiber, now a neighbourhood of Rome, Italy. |
| OSTIAL | • ostial adj. (Anatomy) Relating to any orifice, or ostium. • OSTIAL adj. relating to an ostium, the mouth of a river or a mouthlike opening. |
| OSTIUM | • ostium n. A small opening or orifice, as in a body organ or passage. • ostium n. Any of the small openings or pores in a sponge. • ostium n. The mouth of a river. |
| OSTIARY | • ostiary n. The mouth of a river; an estuary. • ostiary n. One who keeps the door, especially the door of a church; a porter. • OSTIARY n. a doorkeeper at a church. |
| OSTIATE | • OSTIATE adj. having an ostium (a mouthlike opening). |
| OSTIOLE | • ostiole n. (Mycology) A small hole or opening through which certain fungi release their mature spores. • ostiole n. (Botany) A similar hole or opening in plants, such as the opening of the involuted fig inflorescence… • OSTIOLE n. a small bodily opening. |
| OSTINATI | • ostinati n. Plural of ostinato. • OSTINATO n. (Italian) a constantly recurring melodic fragment. |
| OSTINATO | • ostinato n. (Music) A piece of melody, a chord progression, or a bass figure that is repeated over and over as a… • OSTINATO n. (Italian) a constantly recurring melodic fragment. |
| OSTIOLAR | • ostiolar adj. Of or pertaining to the ostiole. • OSTIOLAR adj. relating to an ostiole, a small opening. |
| OSTIOLES | • ostioles n. Plural of ostiole. • OSTIOLE n. a small bodily opening. |
| OSTIARIES | • ostiaries n. Plural of ostiary. • OSTIARY n. a doorkeeper at a church. |
| OSTINATOS | • ostinatos n. Plural of ostinato. • OSTINATO n. (Italian) a constantly recurring melodic fragment. |
| OSTIOLATE | • ostiolate adj. Having an ostiole. • OSTIOLATE adj. having an opening. |