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v. prop·a·gat·ed, prop·a·gat·ing, prop·a·gates
1. To cause (an organism) to multiply or breed.
2. To breed (offspring).
3. To transmit (characteristics) from one generation to another.
4. To cause to extend to a broader area or larger number; spread: missionaries who propagate the faith.
5. To make widely known; publicize: propagate a rumor.
6. Physics To cause (a wave, for example) to move in some direction or through a medium; transmit.
1. To have offspring; multiply.
2. To extend to a broader area or larger number; spread.
3. Physics To move through a medium.

[Latin prōpāgāre, prōpāgāt-; see pag- in Indo-European roots.]

prop′a·ga·ble (-gə-bəl) adj.
prop′a·ga′tive adj.
prop′a·ga′tor n.


1. a person or thing that propagates
2. (Horticulture) a shallow box with a heating element and cover used for germinating seeds or rooting cuttings
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.propagator - someone who propagates plants (as under glass)
botanist, phytologist, plant scientist - a biologist specializing in the study of plants
2.propagator - someone who spreads the news
communicator - a person who communicates with others
References in periodicals archive ?
Check if a propagator has a thermostat to control the temperature constantly and click off if a room gets too warm, says Richard Gianfrancesco, head of research at Which?
If you don't have a heated greenhouse and want to start your seeds off early to give you a head start on spring, it's time to invest in a heated propagator.
Sow summer bedding plants in a heated propagator or under glass.
SOW seeds of lobelia, bedding geraniums and snapdragons in a heated propagator.
Each greenhouse propagator contains everything you need to get you started - six mini pots, compost, six packets of seeds together with comprehensive growing instructions.
He decided to build his own little propagator on top.
She takes her hat off to Theresa Trunnelle, the Huntington's main plant propagator, who can ``root a broomstick.
2 For anyone who wants to start growing plants, a propagator will be a welcome boon.
Check whether the heated propagator has a thermostatic control to control the temperature and click off if the room becomes too warm," says Richard Gianfrancesco, head of research at Which?
Take cuttings of new shoots of camellias, rooting them in a gritty compost in a covered propagator.