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• Ca
  Ca

  calcium.
• CA
  CA

  abbreviation

  California (approved especially for use with zip code).
• ca'
  ca'

  verb (used with or without object)

  to call, as to call an animal toward one; urge forward by calling.
• ca-
  ca-

  variant of ker-.
• ca.
  ca.

  abbreviation

  cathode.
• C/A
  C/A

  capital account.
• C.A.
  C.A.

  abbreviation

  Central America.
• ca
  ca

  abbreviation

  Canada

Ca

¹ American  

Symbol, Chemistry.

1. calcium.

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CA ² American  

abbreviation

1. California (approved especially for use with zip code).

2. chronological age.

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ca' ³ American  

[kah, kaw] / kɑ, kɔ /

verb (used with or without object)

Scot.

1. to call, as to call an animal toward one; urge forward by calling.

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ca- ⁴ American  

1. variant of ker-.

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ca. ⁵ American  

abbreviation

1. cathode.

2. centiare.

3. Also ca (with a year) about.

   ca. 476 b.c.

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C/A ⁶ American  

Or c/a

1. capital account.

2. cash account.

3. credit account.

4. current account.

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C.A. ⁷ American  

abbreviation

1. Central America.

2. chartered accountant.

3. Accounting. chief accountant.

4. Coast Artillery.

5. commercial agent.

6. consular agent.

7. controller of accounts.

8. current assets.

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CA ¹ British  

abbreviation

1. California

2. Central America

3. chartered accountant

4. chief accountant

5. consular agent

6. (in Britain) Consumers' Association

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C/A ² British  

abbreviation

1. capital account

2. credit account

3. current account

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Ca ³ British  

symbol

1. calcium

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ca ⁴ British  

abbreviation

1. Canada

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ca. ⁵ British  

abbreviation

1. circa

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Etymology

Origin of ca'³

Variant of call

Origin of ca.⁵

ca. ( def. 3 ) < Latin circā

Example Sentences

The human genome contains ca. 20,000 genes that are used for the construction of proteins.

From Science Daily • Dec. 8, 2023

Described as “Garcia’s personal briefcase, with handwritten lyrics, drawings, letters, and ephemera, ca. 1977-1979,” the assorted paperwork offers a look at the musician’s daily life on the road.

From Los Angeles Times • Oct. 7, 2021

In the 5th and 4th century the number of "eligible voters" was perhaps not higher than 10% out of a population of ca. 250,000.

From Economist • Nov. 27, 2012

Part of the challenge was to create an interactive version of a city--in this case, Yokosuka, Japan, ca. 1986--in which you can knock on virtually every door on every street.

From Time Magazine Archive

Although no precise statistics are available, it is assumed that ca. three billion people acknowledge religion in our days.

From The Civilization of Illiteracy by Nadin, Mihai