| Word | Definitions | Synonyms |
|---|---|---|
| altar | (noun) a raised structure on which gifts or sacrifices to a god are made | - |
| (noun) the table in Christian churches where communion is given | Synonyms: communion table, Lord's table | |
| altarpiece | (noun) a painted or carved screen placed above and behind an altar or communion table | Synonyms: reredos |
| altazimuth | (noun) an instrument that measures the altitude and azimuth of celestial bodies; used in navigation | - |