| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024ab•a•cus /ˈæbəkəs/USA pronunciation n. [countable], pl. ab•a•cus•es, ab•a•ci /ˈæbəˌsaɪ, -ˌkaɪ/.USA pronunciation - a device for calculating, made of a frame with rods on which balls or beads are moved.
WordReference Random House Unabridged Dictionary of American English © 2024ab•a•cus (ab′ə kəs, ə bak′əs),USA pronunciation n., pl. ab•a•cus•es, ab•a•ci (ab′ə sī′, -kī′, ə bak′ī).USA pronunciation - a device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved.
- Architecture Archit. a slab forming the top of the capital of a column. See diag. under column.
- Greek ábax
- Latin: board, counting board, re-formed
- Middle English 1350–1400
Collins Concise English Dictionary © HarperCollins Publishers:: abacus /ˈæbəkəs/ n ( pl -ci / -ˌsaɪ/, -cuses)- a counting device that consists of a frame holding rods on which a specific number of beads are free to move. Each rod designates a given denomination, such as units, tens, hundreds, etc, in the decimal system, and each bead represents a digit or a specific number of digits
Etymology: 16th Century: from Latin, from Greek abax board covered with sand for tracing calculations, from Hebrew ābhāq dust |