tb

1 of 4

abbreviation (1)

tablespoon; tablespoonful

2 of 4

symbol

terbium

3 of 4

noun

ˌtē-ˈbē

: tuberculosis

4 of 4

abbreviation (2)

thoroughbred

tubercle bacillus

Word History

Etymology

Noun

TB (abbreviation for tubercle bacillus)

First Known Use

Noun

1912, in the meaning defined above

Time Traveler

The first known use of tb was in 1912

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TB-1

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Cite this Entry

Style

“Tb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tb. Accessed 12 Jul. 2025.

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Kids Definition

noun

(ˈ)tē-ˈbē

: tuberculosis

Medical Definition

1 of 3 symbol

terbium

2 of 3 noun

(ˈ)tē-ˈbē

: tuberculosis

3 of 3 abbreviation

tubercle bacillus

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tb

abbreviation (1)

symbol

noun

abbreviation (2)

Word History

Browse Nearby Words

Cite this Entry

Kids Definition

Medical Definition

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