Grade 0 incubates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 to sit on and hatch; 2 keep eggs; embryos; bacteria; etc. in a favorable environment for hatching or development Example Sentence A hen incubates her eggs by sitting on them. Synonyms nursed; developed; fostered Hear It! Say It! Write It! incubates Switch to cursive Start Share with your friends: