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| chlorella |
any of various fresh-water, single-celled green algae. |
| cilium |
one of the microscopic hairlike structures on the surface of many cells, providing locomotion in single-celled animals and movement of fluid across the cells that line certain organs, such as the lungs or stomach, in complex animals. [1/3 definitions] |
| diatom |
any of various tiny single-celled algae having cell walls of silica. |
| dinoflagellate |
any of an order of single-celled marine organisms, classified variously as algae and protozoa, that have two flagella, are usu. luminescent, and include forms responsible for red tide. [1/2 definitions] |
| flagellum |
a whiplike filament extending from certain simple cells, such as reproductive cells or single-celled animals, used mainly for locomotion. [1/3 definitions] |
| foraminifer |
any of several single-celled marine organisms that have chalky cells perforated by tiny pores through which thin pseudopods protrude, and that form the chief component of chalk. |
| monad |
a single-celled organism, esp. a simple type of flagellated protozoan. [1/3 definitions] |
| red tide |
a brownish red discoloration of sea waters caused by a local overabundance of certain single-celled algae that are toxic to many forms of marine life. |
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