in·cu·ba·tion (ĭn′kyə-bāshən, ĭng′-)
a. The act of incubating.
b. The state of being incubated.
2. Medicine The development of an infection from the time the pathogen enters the body until signs or symptoms first appear.
3. Medicine The maintenance of an infant, especially a premature infant, in an environment of controlled temperature, humidity, and oxygen concentration in order to provide optimal conditions for growth and development.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.