| ADDIO | • ADDIO n. (Italian) goodbye. |
| AMNIO | • amnio n. Amniocentesis. • amnio- pref. Amnion; amniotic. • AMNIO n. (short for) an amniocentesis, a test of amniotic fluid for foetal abnormalities. |
| AUDIO | • audio adj. Focused on audible sound, as opposed to sight. • audio n. A sound, or a sound signal. • audio- pref. Sound. |
| CURIO | • curio n. A strange and interesting object; something that evokes curiosity. • CURIO n. an unusual art object. |
| DANIO | • danio n. (Chiefly in combination) Any of various fish of the genera Danio and Devario. • Danio prop.n. A taxonomic genus within the family Cyprinidae – the danios or danionins, small tropical fish often… • DANIO n. a brightly coloured tropical freshwater fish. |
| FOLIO | • folio n. A leaf of a book or manuscript. • folio n. A page of a book, that is, one side of a leaf of a book. • folio n. (Printing) A page number. The even folios are on the left-hand pages and the odd folios on the right-hand pages. |
| FUGIO | • Fugio n. (Numismatic slang, historical) Clipping of Fugio cent. • FUGIO n. a former coin of the United States. |
| HELIO | • helio n. A heliotrope (surveying instrument). • helio- pref. Concerning the sun. • HELIO n. a signalling mirror. |
| NGAIO | • ngaio n. An evergreen tree, Myoporum laetum, native to New Zealand. • NGAIO n. (Maori) a New Zealand tree with white wood. |
| PATIO | • patio n. A paved outside area, adjoining a house, used for dining or recreation. • patio n. An inner courtyard typical of traditional houses in some regions of Spain. • PATIO n. an outdoor paved area adjoining a house. |
| POLIO | • polio n. (Uncountable) Abbreviation of poliomyelitis. • polio n. (Countable, informal) A person who has poliomyelitis. • Polio prop.n. A surname from Spanish. |
| RADIO | • radio n. (Uncountable) The technology that allows for the transmission of sound or other signals by modulation… • radio n. (Countable) A device that can capture (receive) the signal sent over radio waves and render the modulated… • radio n. (Countable) On-board entertainment system in a car, usually including a radio receiver as well as the… |
| RATIO | • ratio n. A number representing a comparison between two named things. • ratio n. (Arithmetic) The relative magnitudes of two quantities (usually expressed as a quotient). • ratio n. (Law) Short for ratio decidendi. |