1792, from Latin ore rotundo "in well-rounded phrases," literally "with round mouth" (see ore rotundo).
The odd thing about the word is that its only currency, at least in its non-technical sense, is among those who should most abhor it, the people of sufficient education to realize its bad formation; it is at once a monstrosity in its form & a pedantry in its use. [Fowler]
实用例句
1. "Stand up, please" she said in a orotund tone.
“请起立”，她用洪亮的音调说。来自辞典例句
2. An area disunity, is an orotund tone color that points three voice Districts different from volume.
