| COM | centre of mass |
|---|---|
| COP | centre of pressure |
| FC | fibrillar centre |
| RC | reaction centre |
| epiotic centre | The centre of ossification of the petrous part of the temporal bone that appears posterior to the posterior saemicircular canal. (05 Mar 2000) |
|---|---|
| expiratory centre | The region of the medulla oblongata that is electrically active during expiration and where electrical stimulation produces sustained expiration. (05 Mar 2000) |
| Kerckring's centre | An occasional independent ossification centre in the occipital bone; it appears in the posterior margin of the foramen magnum at about the sixteenth week of gestation. Synonym: Kerckring's ossicle. (05 Mar 2000) |
| fibrillar centre | <cell biology> Location of the nucleolar ribosomal chromatin at telophase: as the nucleolus becomes active the ribosomal chromatin and associated ribonucleoprotein transcripts compose the more peripherally located dense fibrillar component. (12 Nov 1997) |