What does milted mean?
“Milted” is an uncommon adjective and verb form associated with fish reproduction. As an adjective, it describes a male fish that has milt—the sperm-bearing fluid produced by the testes—and is therefore in breeding condition. As the past tense or past participle of “milt,” it can describe the act of releasing that fluid, especially during artificial breeding in aquaculture. The word is mainly encountered in fisheries, hatchery, and biological contexts rather than everyday speech. It should not be confused with “melted,” which means liquefied by heat, or “malted,” which refers to grain or another substance treated with malt. Although its vocabulary may sound unusual, “milted” is precise modern terminology: it identifies a male fish’s reproductive condition and distinguishes it from an immature fish or one that has already spawned and become spent.
Having milt; of a male fish, being in breeding condition and capable of producing sperm.
"Only fully milted males were released into the breeding pool."
Used chiefly in fisheries, aquaculture, and biological description.
The past tense and past participle of milt, meaning to emit or release sperm.
"The technician milted the trout and collected the released sperm."
Most often encountered in hatchery and artificial-breeding contexts.
Milt is fish sperm, so a milted fish is a male fish that has reached breeding condition.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does milted come from?
“Milted” was formed from “milt” with the English suffix “-ed,” supporting both the adjectival sense “having milt” and the verbal sense “released milt.” “Milt” is recorded in English from Old English and has cognates in Old Norse “milti,” Dutch “milt,” and German “Milch,” the last of which now usually means milk. These forms belong to a Germanic vocabulary associated with fish sperm, although their deeper Indo-European ancestry is more broadly debated.
Related word forms
How milted is actually used
This is specialized vocabulary used chiefly in fisheries, aquaculture, and biological contexts. It is uncommon in general conversation and is not regionally restricted in any strong sense.
Easily confused with milted
Melted means liquefied or softened by heat, whereas milted refers to a fish producing or releasing sperm.
Malted means treated with malt, while milted is associated with the sperm of a male fish.