ROA
noun
ROA is a noun meaning “Initialism of Raman optical activity” (English Wiktionary, September 2026). It is spelled R-O-A and has 2 syllables, and it appears about once in every 2 million words in written English (wordfreq, 2021 data).
What does ROA mean?
noun
- 1
Initialism of Raman optical activity.
- 2
Initialism of register of actions.
- 3
Initialism of right of abode.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce ROA?
ROA has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is ROA?
ROA appears about once in every 2 million words in written English, the 42,145th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).