[suhb-ther-uh-pyoo-tik] /ˌsʌb θɛr əˈpyu tɪk/
indicating a dosage, as of a drug or vitamin, less than the amount required for a therapeutic effect.
[suhb-thresh-ohld, -thresh-hohld] /sʌbˈθrɛʃ oʊld, -ˈθrɛʃ hoʊld/ adjective, Psychology, Physiology. 1. (of a stimulus) too weak to produce a response.
- Subthreshold stimulus
subthreshold stimulus sub·thresh·old stimulus (sŭb-thrěsh’ōld’, -hōld’) n. See inadequate stimulus.
adjective, subtiler, subtilest. 1. subtle. adjective 1. a rare spelling of subtle
noun, Biochemistry. 1. a proteolytic enzyme produced by the bacterium Bacillus subtilis, used as an active ingredient in detergents and also in research to help reveal protein structure.