1.Not visible or apparent; hidden; concealed; secret; dormant; as, latent springs of action. "The evils latent in the most promising contrivances are provided for as they arise."
2.(Med.) Existing but not presenting symptoms; dormant or developing; of disease, especially infectious diseases; as, the latent phase of an infection.
Latent period. (a)(Med.) The regular time in which a disease is supposed to be existing without manifesting itself.
(b)(Physiol.) One of the phases in a simple muscular contraction, in which invisible preparatory changes are taking place in the nerve and muscle.
(c)(Biol.) One of those periods or resting stages in the development of the ovum, in which development is arrested prior to renewed activity.