According to the counting frame, the result is 228. The choice between the two forms depends on the context and personal preference. Seven units beads and 1 hundreds bead are moved to the right, 5 tens beads are moved to the left (+7+100-50 57). In conclusion, the plural of abacus can be either 'abaci' or 'abacuses,' and both are grammatically correct.

It uses sliding beads in columns that are divided in two by a. Similar devices predate the Greek and Roman days.

Instead, you can say, 'I have two packets of sugar,' or 'I have two spoonfuls of sugar.' An abacus, also known as a counting frame, is a mechanical device used to perform mathematical functions. One of the earliest counting instruments. In contrast, you cannot say, 'I have two sugars,' as 'sugar' is an uncountable noun. Countable nouns are things that can be counted, such as 'book,' 'apple,' or 'chair,' while uncountable nouns are things that cannot be counted, such as 'water,' 'sugar,' or 'furniture.'įor example, if you have two abacuses, you can say, 'I have two abacuses,' because 'abacus' is a countable noun. In English grammar, nouns can be categorized as either countable or uncountable. Is Abacus a Countable or Uncountable Noun?Ībacus is a countable noun, which means it refers to a specific object that can be counted. See the graph at the bottom of the page for a comparison of the instances of each word in written English over time. However, over time, the word has evolved, and the anglicized plural form 'abacuses' has slowly grown in usage. This follows the same rules as many similar words ending in - us such as cactus, radius and platypus. The word abacus comes from the Greek word ' abax,' which means ' board' or ' slab.' Being of Greek origin, the Greek pluralization of the word “ abacus” is “ abaci”.

Abacus beads definition