| TRITONE | Musical interval consisting of three whole tones whose use was prohibited in medieval times |
| ETHER | Anaesthetic whose use was first demonstrated in 1846 by a Boston dentist (5) |
| DIATONIC | Of a musical scale, based on an octave containing five whole tones and two separated semitones (8) |
| TRITON | Musical interval of three whole steps briefly identifies 1960s BBC adventure series (6) |
| TRIGRAM | Figure made up of three whole or broken lines, traditionally used in the Chinese system of divination I Ching (7) |
| PAPARAZZI | This is the plural form of a word derived from Paparazzo, the surname of a photographer in the film La dolce vita (1959) by Federico Fellini. Its first known use was in 1961. |
| MALARIA | In Italian, this word (actually, two words) means "bad air." In English, it refers a human disease caused by parasites of the genus Plasmodium transmitted by mosquitos. Its first known use was in 1740 |
| MACRAME | Technique of decorative knotting whose first known use was recorded by the Arabs in the 13th Century |
| ORGANS | Aerophones with manuals, stops and ranks of pipes whose use whose use in English parish churches succeeded "west gallery" music provided by groups of singers (6) |
| ADYTA | Sacred places of worship in an ancient temple from which the laity was prohibited (5) |
| ADYTUM | The most sacred place of worship in an ancient temple from which the laity was prohibited |
| LST | Its first combat use was in 1943 in the Solomon Isls. |
| OAK | Sacred to Roman god Jupiter, a tree in the genus Quercus whose use in shipbuilding inspired David Garrick's line in a song used as the official march of the Royal Navy (3) |
| MINUTE | Word for the 60th part of an hour whose use in the sense of a note or memorandum derives from pre-printing days when scribes made rough copies in small writing (6) |
| MICHIGAN | University whose use of affirmative action in admissions policy was upheld by a federal judge |
| MUSTARD | Despite being prohibited in 1925 this WWI chemical weapon may still be in use; ... gas |
| TRIADS | Groups, sets or unions of three related things; or, in music, chords consisting of three notes (6) |
| ZEALOUS | Being devoted to Zola, use was made of it (7) |
| XYLOPHONE | Its first notable orchestral use was in Saint-Saens' "Danse Macabre" |
| HYPHEN | Punctuation mark whose first documented use was by Dionysius Thrax more than 2000 years ago (6) |
