| ARCHAEA | • archaea n. Plural of archaeon. • Archaea prop.n. Single-celled organisms lacking nuclei, formerly called archaebacteria, but now known to differ fundamentally… • ARCHAEON n. a single celled organism like bacterium. |
| ARCHAEI | • archaei n. Plural of archaeus. • ARCHAEUS n. an inner controlling spirit, also ARCHEUS. |
| ARCHAIC | • archaic n. (Archaeology, US, usually capitalized) A general term for the prehistoric period intermediate between… • archaic n. (Paleoanthropology) (A member of) an archaic variety of Homo sapiens. • archaic adj. Of or characterized by antiquity; old-fashioned, quaint, antiquated. |
| ARCHEAN | • Archean adj. Alternative form of Archaean. • Archean prop.n. Alternative form of Archaean. • ARCHEAN adj. relating to the archaea, an order of prokaryootic microorganisms, also ARCHAEAL, ARCHAEAN, ARCHAEON. |
| ARCHERS | • archers n. Plural of archer. • ARCHER n. someone who uses a bow and arrow. |
| ARCHERY | • archery n. (Uncountable) The practice or sport of shooting arrows with a bow. • archery n. (Countable) A group of archers. • ARCHERY n. the sport of shooting with bows and arrows. |
| ARCHEST | • archest adj. Superlative form of arch: most arch. • archest v. (Archaic) second-person singular simple present form of arch. • ARCH adj. sly, mischievous. |
| ARCHEUS | • archeus n. (Alchemy) The vital principle or force believed by the Paracelsians to be responsible for alchemical… • ARCHEUS n. an inner controlling spirit, also ARCHAEUS. |
| ARCHFOE | • archfoe n. Archenemy. • ARCHFOE n. a principal foe. |
| ARCHILS | • archils n. Plural of archil. • ARCHIL n. a red or violet dye, also ORCHEL, ORCHELLA, ORCHILLA, ORSEILLE. |
| ARCHINE | • archine n. Alternative form of arshin. • ARCHINE n. (Turkish) an old Russian unit of length, also ARSHEEN, ARSHIN, ARSHINE. |
| ARCHING | • arching v. Present participle of arch. • arching n. The arched part of a structure. • arching adj. (Nautical) hogging, as opposed to sagging. |
| ARCHIVE | • archive n. A place for storing earlier, and often historical, material. An archive usually contains documents (Letters… • archive n. The material so kept, considered as a whole (compare archives). • archive n. (Ecology) Natural deposits of material, regarded as a record of environmental changes over time. |
| ARCHLET | • archlet n. A small arch. • ARCHLET n. a little arch. |
| ARCHONS | • archons n. Plural of archon. • ARCHON n. the chief magistrate of ancient Athens. |
| ARCHWAY | • archway n. A passageway covered by an arch, particularly one made of masonry. • archway n. A doorway with a semilunar-shaped top. • ARCHWAY n. a passageway under an arch. |