nona-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Inflections: Before a vowel non-.

Origin: A borrowing from Latin. Etymon: Latin nōnus.

Etymology: < classical Latin nōnus ninth < novem nine (see novem- comb. form), with -a- perhaps after classical Latin nōnāgintā ninety (see nonagesimal adj. and n.) and its derivatives.With the isolated exception of nonagon n. (first half of the 17th cent.), English formations are found from the mid 19th cent. (see e.g. nonane n., nonic n. and adj.).

Categories »

1. Chiefly Science. Forming terms in which nona- indicates the presence of nine of something or the possession of a property in the ninth degree, as nonagon n., nonapeptide n., nonic n. and adj.

Categories »

2. Chemistry. Forming words denoting the presence of a chain of nine carbon atoms in an organic compound or radical, as nonane n. (the earliest), nonanoic adj., nonyl n.

This entry has been updated (OED Third Edition, December 2003; most recently modified version published online June 2019).

单词	nona-
释义	nona-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Inflections: Before a vowel non-. Origin: A borrowing from Latin. Etymon: Latin nōnus. Etymology: < classical Latin nōnus ninth < novem nine (see novem- comb. form), with -a- perhaps after classical Latin nōnāgintā ninety (see nonagesimal adj. and n.) and its derivatives.With the isolated exception of nonagon n. (first half of the 17th cent.), English formations are found from the mid 19th cent. (see e.g. nonane n., nonic n. and adj.). Categories » 1. Chiefly Science. Forming terms in which nona- indicates the presence of nine of something or the possession of a property in the ninth degree, as nonagon n., nonapeptide n., nonic n. and adj. Categories » 2. Chemistry. Forming words denoting the presence of a chain of nine carbon atoms in an organic compound or radical, as nonane n. (the earliest), nonanoic adj., nonyl n. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online June 2019). < comb. form
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