protocoelomate
/ˌprəʊtə(ʊ)ˈsiːlə(ʊ)meɪt/Zoology rare
noun
Originally: (A. S. Hyatt's name for) a member of a grade of primitive multicellular animals characterized by a simple central cavity with branching sacs (not now considered coelomic), comprising most or all of the sponges. Now: a metazoan animal considered to represent or resemble a common ancestor of coelomate phyla.
Origin
Late 19th century. From proto- + coelomate. Compare scientific Latin protocoelomata.
- pentobarbitone
- pentode
- pentoic
- pentolinium
- Pentomic
- pentomino
- penton
- Pentonvillain
- Pentonville
- pentop
- pentosan
- pentosane
- pentose
- pentose cycle
- pentose nucleic acid
- pentose phosphate
- pentose phosphate cycle
- pentose phosphate pathway
- pentose phosphate shunt
- pentose shunt
- pentoside
- pentosuria
- pentosuric
- Pentothal
- pentoxide