metazoan
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GC: n

S: PNAS (last access: 15 May 2025); SDir (last access: 15 May 2025).

N: 1. New Latin Metazoa, from meta- + -zoa. The first known use of metazoan was in 1879.

2. metazoan (noun and adjective).

  • As a noun: Any of a group (Metazoa) that comprises all animals having the body composed of cells differentiated into tissues and organs and usually a digestive cavity lined with specialized cells.

3. Origin of Life and Speciation; Paleontology: metazoan, metazoa.

  • The large group of multicellular animals in which the cells are arranged in two layers in the embryonic gastrula stage.
  • The origin and evolution of eukaryotic cells and sexual reproduction in the Precambrian set the stage for the first metazoans and metaphytes and their rapid increase at the start of the Phanerozoic.

4. Zoology: Metazoa.

  • Animals, which are also ingesters, comprise the kingdom Metazoa.

5. Zoology: metazoon.

S: 1 & 2. MW (last access: 15 May 2025). 3 to 5. TERMIUM PLUS – https://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=1&srchtxt=METAZOA&index=alt&codom2nd_wet=1#resultrecs, https://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=1&srchtxt=METAZOON&index=alt&codom2nd_wet=1#resultrecs (last access: 15 May 2025).

SYN: metazoon

S: TERMIUM PLUS – https://www.btb.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=1&srchtxt=METAZOON&index=alt&codom2nd_wet=1#resultrecs (last access: 15 May 2025)

CR: arthropod, mollusk, protozoo.