A substance secreted like a hormone but having the effect of inhibiting a physiological process.
More example sentences
- A reaction based on chalones cannot explain the re-transformation of the tumour into normal skin cells.
- In addition, European researchers provided evidence for endogenous growth inhibitory substances, called chalones, in glands and tissues.
- Regression of generalized leukaemia in rat is induced by the granulocytic chalone.
early 20th century: from Greek khalōn 'slackening', present participle of khalaein, on the pattern of hormone.