Definición de protostome en inglés:

protostome

Saltos de línea: proto|stome
Pronunciación: /ˈprəʊtə(ʊ)stəʊm
 
/

sustantivo

Zoology
A multicellular organism whose mouth develops from a primary embryonic opening, such as an annelid, mollusc, or arthropod.
Más ejemplos en oraciones
  • These animals are all protostomes - the mouth develops before the anus in the young embryo - and they have long been recognized as belonging together as a group.
  • In the complementary category, the protostomes, which includes annelids and arthropods, the blastopore develops into the mouth.
  • Arthropods are bilaterally symmetrical protostomes with strongly segmented bodies.

Origen

1950s: from proto- 'primitive' + Greek stoma 'mouth'.

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Palabra del día impudicity
Pronunciación: ˌɪmpjʊˈdɪsɪti
noun
lack of modesty