Noun: raie ultime
| Singular | raie ultime |
| Plural | raies ultimes |
Sample Sentences
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In the second paper M. de Gramont considers the distribution of raies ultimes in different stellar types, having studied for this purpose the Harvard classifications, the numerous publications of Sir Norman Lockyer, and the works of Sir William Huggins. [1910 February 10, Nature, LXXXII, page 440:]
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De Gramont distinguished by the name of Raie Ultime that line in the spectrum of an element which is the last to disappear. [1920, Optical Methods in Control and Research Laboratories, page 4:]
Etymology
First attested in the plural in February 1910 and in the singular in 1920; French: raie (“line”) + ultime (“final”).