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1. The eggs of aquatic animals such as bivalve mollusks, fishes, and amphibians.
2. Offspring, especially when occurring in large numbers.
3. A product or an outcome: the spawn of a prodigious imagination.
4. Mycelia of mushrooms or other fungi grown in specially prepared organic matter for planting in beds.
v. spawned, spawn·ing, spawns
1. To deposit eggs; produce spawn.
2. To produce offspring in large numbers.
1. To produce or deposit (spawn).
2. To produce (offspring).
3. To produce or give rise to: tyranny that spawned revolt.
4. To plant with mycelia grown in specially prepared organic matter.

[Middle English spawne, from spawnen, to spawn, from Anglo-Norman espaundre, from Latin expandere; see expand.]

spawn′er n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spawner - a female fish at spawning time
fish - any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills; "the shark is a large fish"; "in the living room there was a tank of colorful fish"
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References in periodicals archive ?
Protection of conch in the Exuma Cays Land and Sea Park presented the unusual opportunity to examine a wide range of spawner densities, from a few conch per hectare to approximately 650 per hectare.
estuarine spawner (juveniles spawned inestuary, adults occur in open waters; e.
In contrast to Nordeng's (1961, 1983) results, we could not demonstrate sex ratios that departed from unity, irrespective of morph or category of spawner.
Sonny had a nice, maybe sixteen-inch milker on the stringer in the clear fast water, a lovely mottled light and dark-green walleye, and as Leroy opened the A-frame so I could get the oars, Lee hooked and landed a bigger spawner.
We took an empirical approach to modeling multiple spawner types by fitting interactions between latitude and temperature, and latitude and day of year, to fit a mixture of geographically offset but overlapping distributions.
ABSTRACT Current low densities of the northern abalone Haliotis kamtschatkana may be affecting the fertilization success of this endangered broadcast spawner, thus preventing its populations from recovering to historical levels.
Low spawner numbers in 2007 mean the rivers will be closed again in 2010, but the outlook for a re-opening in 2011 is good.
While a 17-inch spawner may release 370,000 eggs, he reports, veterans 34 inches long may produce 3.
Response of bay scallops to spawner transplants: A test of recruitment limitation.
ODFW biologists and field crews are resuming work on a multi-year study to estimate fall chinook spawner escapement in the Siuslaw River.
sordidus is a territorial spawner and a benthic omnivore, making it ideal for monitoring anthropogenic effects on coral reefs.
oocytes at early migratory nucleus, late migratory nucleus, and hydrated stages, as well as new postovulatory follicles) of an indeterminate multiple-batch spawner, Japanese flounder (Paralichthys olivaceus), was evaluated.