| ADDIOS | • ADDIO n. (Italian) goodbye. |
| AMNIOS | • amnios n. (Anatomy) amnion. • AMNIO n. (short for) an amniocentesis, a test of amniotic fluid for foetal abnormalities. |
| AUDIOS | • audios n. Plural of audio. • AUDIO n. reproduction of recorded or broadcast sounds. |
| CURIOS | • curios n. Plural of curio. • CURIO n. an unusual art object. |
| DANIOS | • danios n. Plural of danio. • DANIO n. a brightly coloured tropical freshwater fish. |
| FOLIOS | • folios n. Plural of folio. • FOLIO v. to number the pages of. |
| FUGIOS | • Fugios n. Plural of Fugio. • FUGIO n. a former coin of the United States. |
| HELIOS | • helios n. (Historical) A sunroom or solarium of the Ancient Greeks. • helios n. Plural of helio. • Helios prop.n. (Greek mythology) The god of the Sun; son of Hyperion and Theia, brother of Selene and Eos, father of… |
| NGAIOS | • ngaios n. Plural of ngaio. • NGAIO n. (Maori) a New Zealand tree with white wood. |
| PATIOS | • patios n. Plural of patio. • PATIO n. an outdoor paved area adjoining a house. |
| POLIOS | • polios n. Plural of polio. • Polios prop.n. Plural of Polio. • POLIO n. an infectious virus disease. |
| RADIOS | • radios n. Plural of radio. • radios v. Third-person singular simple present indicative form of radio. • RADIO n. signalling through space, without connecting wires, by means of electromagnetic waves. |
| RATIOS | • ratios n. Plural of ratio. • RATIO n. (Latin) a proportional relationship. |