nephridium

American  

[nuh-frid-ee-uhm] / nəˈfrɪd i əm /

noun

Zoology.

plural

nephridia

1. the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.

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nephridium British  

/ nɪˈfrɪdɪəm /

noun

1. a simple excretory organ of many invertebrates, consisting of a tube through which waste products pass to the exterior

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Other Word Forms

• nephridial adjective

Etymology

Origin of nephridium

From New Latin, dating back to 1875–80; nephr-, -idium

Example Sentences

Beating cilia at the opening of the nephridium draw water from the coelom into a tubule.

From Textbooks • Jun. 9, 2022

The nephridium is connected to the barrier separating the compartments, and consists of a long coil connected to a trumpet-like bell.

From Textbooks • Jan. 1, 2015

There are thus substantial reasons for believing that the nephridium grows backwards from a funnel as does the coelomoduct.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" by Various

The network is, however, of the duct of the nephridium, possibly ectodermic in origin, and does not affect the glandular tubes which remain undivided and with one coelomic funnel each.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" by Various

The Polychaeta, however, present us with another form of nephridium seen, for example, in Arenicola, where a large funnel leads into a short and wide excretory tube whose lumen is intercellular.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" by Various