单词 | cladus |
释义 | cladus|ˈkleɪdəs| Pl. cladi. [mod.L., a. Gr. κλάδος branch.] One of the secondary arms or branches of a ramose sponge spicule. Hence ˈcladal, ˈcladose adjs.
1887Sollas in Encycl. Brit. XXII. 416/2 The spicular rays..usually pointed (oxeate) at the ends..are also frequently..branched (cladose). 1888― in Challenger Rep. XXV. p. lvi, The proximal or undivided part of a cladus is..distinguished as the protocladus, the distal division, in the case of a dichotomous cladus as the deuterocladus. Ibid., A straight line drawn from the cladal origin to the end of a cladus is taken as its length. 1940[see cladome]. |

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