释义 |
annulation|ænjuːˈleɪʃən| [n. of action f. annulate.] The formation of rings or ring-like divisions; concr. a ring-like structure, a ring.
1829? Jesse Jrnl. Natur. 332 The whole body of the animal [hairworm] consists of numerous annulations. 1870Rolleston Anim. Life Introd. 123 Their [worms'] bodies are..divided externally by annulation. 1872Nicholson Palæont. 271 The walls of the shell are..surrounded with numerous thickened rings or annulations. |