| AQUAFORTISES | • AQUAFORTIS n. concentrated nitric acid, used for etching. |
| AQUAFORTISTS | • aquafortists n. Plural of aquafortist. • AQUAFORTIST n. an etcher or engraver who uses aquafortis. |
| AQUARELLISTS | • aquarellists n. Plural of aquarellist. • AQUARELLIST n. an artist painting aquarelles. |
| ARQUEBUSADES | • arquebusades n. Plural of arquebusade. • ARQUEBUSADE n. (French) a lotion for shot-wounds. |
| MARQUESSATES | • marquessates n. Plural of marquessate. • MARQUESSATE n. the rank of marquess. |
| MASQUERADERS | • masqueraders n. Plural of masquerader. • MASQUERADER n. one who masquerades. |
| PASQUINADERS | • pasquinaders n. Plural of pasquinader. • PASQUINADER n. one who composes pasquinades. |
| QUACKSALVERS | • quacksalvers n. Plural of quacksalver. • quack-salvers n. Plural of quack-salver. • QUACKSALVER n. (archaic) a quack. |
| QUADRASONICS | • QUADRASONICS n. a system of sound recording and reproduction that uses four independent loudspeakers to give directional sources of sound. |
| QUAESTUARIES | • QUAESTUARY n. (Latin) an ancient Roman public treasurer or assistant military commander, also QUAESTOR, QUESTOR. |
| QUASICRYSTAL | • quasicrystal n. (Physics, chemistry) any solid with conventional crystalline properties but exhibiting a point group… • quasi-crystal n. Alternative form of quasicrystal. • QUASICRYSTAL n. a body of solid material that resembles a crystal in being composed of repeating structural units but that incorporates two or more unit cells into a quasiperiodic structure. |
| SESQUIALTERA | • sesquialtera n. (Music) A ratio of 3:2. • sesquialtera n. (Music) An organ stop that uses two ranks of different pipes. • SESQUIALTERA n. a perfect fifth; three notes against two; an organ stop giving the root, the twelfth and the tierce. |
| SQUARSONAGES | • squarsonages n. Plural of squarsonage. • SQUARSONAGE n. the dwelling of a squarson. |