a secretion, esp a hormone, that is absorbed directly into the blood
internal secretion in American English
a substance secreted directly into the blood, as by an endocrine gland; hormone
Examples of 'internal secretion' in a sentence
internal secretion
Secretory tissues of internal secretion are represented by essential oil containers.
Iryna V. Ivashchenko, Galyna F. Ivanenko 2017, 'Morphological and anatomical structure of leaves of Artemisia abrotanum (Asteraceae)introduced in Zhytomyr Polissya', Modern Phytomorphologyhttp://ojs.phytomorphology.org/index.php/MP/article/view/489. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)