| 释义 |
biordinal, a. (n.) Math.|baɪˈɔːdɪnəl|
[f. bi- prefix2 II + ordinal, f. L. ordo, ordin-, rank, order.]
A. adj. Of the second order.
1853De Morgan Camb. Philos. Trans. IX. iv. 2 It is desirable to invent single words to stand for the phrases ‘of the first order,’ ‘of the second order,’ etc. I propose primordinal, biordinal, etc. The word differential may be dispensed with, since these adjectives are understood to apply to differential equations only.
B. n. A linear differential equation of the second order: see ordinal.
1881Sir J. Cockle in Athenæum 268 [Paper entitled] ‘Supplement on Binomial Biordinals.’ |