noun (plural cristae /ˈkrɪstiː/)
1 Anatomy & Zoology A ridge or crest.
- The posterior lingual and buccal cristae do not meet the median longitudinal crista.
- Near the front of the brain, in the midline, a deep sagittal groove in the dura indicates the site where the crista galli of the ethmoid bone is accommodated.
- The falx is narrow and attached firmly to the crista galli of the ethmoid bone.
2 Biology Each of the partial partitions in a mitochondrion formed by infolding of the inner membrane.
- The inner mitochondrial membrane is folded into cristae that permeate the soluble, internal matrix.
- The cytoplasm was full of elongated mitochondria, rich in cristae, and with pale matrix.
- In the swollen mitochondria, the cristae system practically disappeared.
- Example sentences
- Neither of the two cristate plants have ever flowered, so I had to propagate them by none cristate offsets cuttings.
- In addition to cristate and variegated succulents the book covers all kinds of succulent plant freak growths from chimeras and uncontrolled proliferation to spiral torsion and spinelessness.
- The distinct morphology of this and other brain cacti, known as cristate or crested growth, is caused by an apical meristem gone awry.
Mid 19th century: from Latin, 'tuft, plume, crest'.
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