Similar words: aback, acute, acumen, vacuum, lacuna, faculty, evacuate, mea culpa. Meaning: ['æbəkəs] 
n. 1. a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave 2. a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves.
n. 1. a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave 2. a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves. 
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1 They also learned to use the abacus.
2 The abacus was the precursor of the modern electronic calculator.
3 Sometimes he calculates the price on an abacus and then indicates the total.
4 Once in a while, the numbers fall, the abacus clicks into a pattern.
5 Make an abacus and write a report about its usefulness in terms of place value and computation.
6 She gave him an abacus, explained the basic principles, and showed him how to make his trick work even better.
7 Vocabulary is words, lists of, abacus beads, each encapsulating a precise idea.
8 The abacus is the ancestor of the modern computer.
9 The abacus is still in use today Chinatowns abroad.
10 She can reckon rapidly on the abacus.
11 They don't use an abacus when they count, right?
12 Do you know how to work an abacus?
13 Masterly crafted to perfection, this exquisite Chinese abacus has gold plating and Afghanistan white jade counters.
14 I've passed the tests of business skills for abacus and shorthand.
15 A : So am I. Using an abacus is still a basic accounting.
16 A is an Abacus, the ancient Chinese adding machine which uses beads for counting.
17 The abacus fell down on the ground and the beads went everywhere.
18 They do use an abacus when they count, do they?
19 Look up words and concepts like abacus, Thales' theorem, obtuse triangle and a lot more in this special site.
20 She is a passive person like an abacus, lacking initiative in everything.
21 What distinguishes the Abacus case from other doomed subprime deals are the e-mails written by a young Goldman vice-president and now co-defendant, Fabrice Tourre.
22 Children thinking courses: abacus calculation, English, literature special education,[www.Sentencedict.com] English language.
23 Vassily Prokofyevich, the manager, was doing his accounts, snapping his abacus.
24 The central volutes intertwine and a tendril and foliage breaks the line of the abacus between these and the angle volutes.
25 About twelve worshippers dotted the empty, evenly-spaced pews, like lonely beads on a child's abacus.
26 All of them will make either a slide rule or an abacus as a way of presenting how number sets work.
27 Calculating machines One of the first calculating machines was an abacus.
28 The children are learning to do their sums on an abacus.
29 Those are two good plays, " Chuehhsin interjected, still manipulating his abacus. " Unfortunately, I haven't the time. "
30 From the opposite corner of the blackboard leans an abacus.