Grade 0 incubates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to keep something warm to help it develop. Example Sentence A hen incubates her eggs by sitting on them. More Example Sentences The scientist incubates the bacteria in warmth. Synonyms hatches; nurtures; warms Hear It! Say It! Write It! incubates Switch to cursive Start Share with your friends: