- Any of various predominantly marine algae of the division Rhodophyta, characteristically red or reddish in color. Often used in the plural.红藻：海藻中占绝大多数的多种红藻科海藻之一，特点是红色或带有红色。常用复数
- Presidente Prudente
- presidential
- president pro tem
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- presidents
- Presidents' Day
- presidents pro tempore
- presides
- presidia
- presidia
- presidial
- presiding
- presidio
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- presidium
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- presignified
- presignifies
- presignify
- presignifying
- Presley
- presoak
- pre-Socratic
- presold
- presort