nephridium

noun
ne·​phrid·​i·​um | \ ni-ˈfri-dē-əm How to pronounce nephridium (audio) \
plural nephridia\ ni-​ˈfri-​dē-​ə How to pronounce nephridia (audio) \

Definition of nephridium

: a tubular glandular excretory organ characteristic of various invertebrates

Other Words from nephridium

nephridial \ ni-​ˈfri-​dē-​əl How to pronounce nephridial (audio) \ adjective

First Known Use of nephridium

1877, in the meaning defined above

History and Etymology for nephridium

New Latin

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The first known use of nephridium was in 1877

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nephridium

noun
ne·​phrid·​i·​um | \ ni-ˈfrid-ē-əm How to pronounce nephridium (audio) \
plural nephridia\ -​ē-​ə How to pronounce nephridia (audio) \

Medical Definition of nephridium

: an excretory organ that is characteristic of various coelomate invertebrates (as annelid worms, mollusks, brachiopods, and some arthropods), occurs paired in each body segment or as a single pair serving the whole body, typically consists of a tube opening at one end into the coelom and discharging at the other end on the exterior of the body, is often lengthened and convoluted, and has glandular walls

Other Words from nephridium

nephridial \ -​ē-​əl How to pronounce nephridial (audio) \ adjective

More from Merriam-Webster on nephridium

Britannica.com: Encyclopedia article about nephridium

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