invisible unless viewed through a microscope.
adjective 1. of the nature of or resembling glass, as in transparency, brittleness, hardness, glossiness, etc.: vitreous china. 2. of or relating to glass. 3. obtained from or containing glass. adjective 1. of, relating to, or resembling glass 2. made of, derived from, or containing glass 3. of or relating to the vitreous humour or […]
adjective 1. mentally formulated as words, especially without vocalization.
- Subvocal speech
subvocal speech sub·vo·cal speech (sŭb-vō’kəl) n. Slight movements of the speech muscles, related to thinking but producing no sound.
adverb, Latin. 1. (used as a direction to a reference) under the specified word.