1. unit, unit of measurement

any division of quantity accepted as a standard of measurement or exchange

Example Sentences:
'the dollar is the United States unit of currency'
'a unit of wheat is a bushel'
'change per unit volume'

• unit of measurement

2. unit

an individual or group or structure or other entity regarded as a structural or functional constituent of a whole

Example Sentences:
'the reduced the number of units and installations'
'the word is a basic linguistic unit'

3. social unit, unit

an organization regarded as part of a larger social group

Example Sentences:
'the coach said the offensive unit did a good job'
'after the battle the soldier had trouble rejoining his unit'

• social unit

4. unit

a single undivided whole

Example Sentences:
'an idea is not a unit that can be moved from one brain to another'

5. building block, unit

a single undivided natural thing occurring in the composition of something else

Example Sentences:
'units of nucleic acids'

• building block

6. unit, whole

an assemblage of parts that is regarded as a single entity

Example Sentences:
'how big is that part compared to the whole?'
'the team is a unit'

• whole