rhizopod

1 of 2

noun (1)

rhi·​zo·​pod ˈrī-zə-ˌpäd How to pronounce rhizopod (audio)
: any of a phylum (Rhizopoda) of usually creeping protozoans (such as an amoeba or a foraminifer) having lobate or rootlike pseudopodia

rhizopodium

2 of 2

noun (2)

rhi·​zo·​po·​di·​um
ˌrīzəˈpōdēəm
variants or less commonly rhizopod
plural -s
: a filamentous branching anastomosing ectoplasmic pseudopodium that is typical of many foraminiferans and some testaceans

Word History

Etymology

Noun (1)

New Latin Rhizopoda, from rhiz- + -poda -pod

Noun (2)

New Latin rhizopodium, from rhiz- + -podium

First Known Use

Noun (1)

1851, in the meaning defined above

Time Traveler
The first known use of rhizopod was in 1851

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Cite this Entry

“Rhizopod.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhizopod. Accessed 26 Jun. 2026.

Medical Definition

rhizopod

noun
rhi·​zo·​pod ˈrī-zə-ˌpäd How to pronounce rhizopod (audio)
: any protozoan of the former group Rhizopoda

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