one-celled
Học thuậtThân thiện
Definition
Adjective: - Having a single cell (and thus not divided into cells): Describes an organism or life form that consists of only one cell, as opposed to being multicellular. This is a fundamental biological classification.
Usage
The adjective "one-celled" is used attributively, typically placed before a noun to describe it. It is a straightforward, descriptive term common in basic biological contexts. - It modifies nouns like organism, animal, creature, or specific biological names (e.g., amoeba).
Examples
- Attributive use:
- Amoebas are one-celled organisms found in pond water.
- The scientist studied various one-celled life forms under the microscope.
- Bacteria, though simple, are complex one-celled beings.
Advanced Usage
- The term is often used in educational or introductory scientific texts to contrast with "multi-celled" or "multicellular" organisms.
- It can be hyphenated ("one-celled") or written as two words ("one celled"), though the hyphenated form is more standard, especially when used attributively before a noun.
Variants and Related Words
- Unicellular (adj): This is a more formal and precise synonym used in scientific terminology.
- Yeast is a unicellular fungus.
- Single-celled (adj): A common variant with identical meaning.
- Paramecium is a well-known single-celled protist.
Synonyms
- Unicellular
- Single-celled
- Acellular (Note: This can be synonymous in some contexts but may specifically refer to entities like viruses that are not composed of cells in the traditional sense.)
Antonyms
- Multicellular
- Many-celled
Adjective
- having a single cell (and thus not divided into cells)