| 释义 |
pneumaticity|njuːməˈtɪsɪtɪ|
[f. pneumatic + -ity.]
The quality or condition of being pneumatic (in quots., in sense 3 b of the adj.).
1858Mayne Expos. Lex., Pneumaticitas, term for that condition of the skeleton of birds into most of the bones of which the external air has the faculty of entering: pneumaticity. 1870Rolleston Anim. Life 17 The greater pneumaticity which the individual bones ordinarily possess. 1882W. K. Parker in Nature XXVI. 254/2 The pneumaticity of the crocodile's endocranium. |