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Medical Definition of Ectohormone
1. A parahormonal chemical mediator of ecological significance which is secreted, largely by an organism (usually an invertebrate) into its immediate environment (air or water); it can alter the behaviour or functional activity of a second organism, often of the same species as that secreting the ectohormone. See: ecological ectocrine. (05 Mar 2000)
Lexicographical Neighbors of Ectohormone
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