| 释义 |
Definition of culmen in English: culmennounPlural culmina ˈkʌlmɛnˈkəlmən 1Ornithology
The upper ridge of a bird's bill. 〔鸟〕（鸟的）嘴峰 Example sentencesExamples - For both species, body size traits (in mm) included mean tarsus length, mean flattened wing chord, tail length, and culmen length (base of cere to tip of beak).
- Old World sparrows are small to medium sized, stocky birds with a short bill with a decurved culmen and short legs.
- Before experiments began, we took standard morphometrics of wing chord length, culmen, tarsus, tail length (all to the nearest 0.1 mm), and body mass.
- Prey size was estimated by comparing the length of the exposed bill culmen of adults with the length of the prey.
- These seven males carried the egg away from the nest in their mandibles or rolled it out of the nest (to a distance of 30-40 cm from the nest) by pushing with the culmen.
2Anatomy
A small region in the brain on the anterior surface of the cerebellum. 〔剖〕山顶（位于小脑表面的前部脑内） Example sentencesExamples - In the midline, above the central lobule, the culmen projects above the rest of the superior surface of the cerebellum.
OriginMid 17th century (in the sense 'top, summit'): from Latin, contraction of columen 'top, summit'. Definition of culmen in US English: culmennounˈkəlmən 1Ornithology
The upper ridge of a bird's bill. 〔鸟〕（鸟的）嘴峰 Example sentencesExamples - Before experiments began, we took standard morphometrics of wing chord length, culmen, tarsus, tail length (all to the nearest 0.1 mm), and body mass.
- For both species, body size traits (in mm) included mean tarsus length, mean flattened wing chord, tail length, and culmen length (base of cere to tip of beak).
- Prey size was estimated by comparing the length of the exposed bill culmen of adults with the length of the prey.
- Old World sparrows are small to medium sized, stocky birds with a short bill with a decurved culmen and short legs.
- These seven males carried the egg away from the nest in their mandibles or rolled it out of the nest (to a distance of 30-40 cm from the nest) by pushing with the culmen.
2Anatomy
A small region in the brain on the anterior surface of the cerebellum. 〔剖〕山顶（位于小脑表面的前部脑内） Example sentencesExamples - In the midline, above the central lobule, the culmen projects above the rest of the superior surface of the cerebellum.
OriginMid 17th century (in the sense ‘top, summit’): from Latin, contraction of columen ‘top, summit’. |