fer·​til·​i·​za·​tion | \ ˌfər-tə-lə-ˈzā-shən How to pronounce fertilization (audio) \

Definition of fertilization

: an act or process of making fertile: such as
a : the application of fertilizer
b(1) : an act or process of fecundation, insemination, or pollination not used technically
(2) : the process of union of two gametes whereby the somatic chromosome number is restored and the development of a new individual is initiated

Examples of fertilization in a Sentence

Recent Examples on the Web Her work, published in 1958, laid the foundation for in-vitro fertilization 20 years later, along with new research techniques. Kiona N. Smith, Forbes, "Monday’s Google Doodle Celebrates Biologist Anne McLaren," 26 Apr. 2021 This can occur when there is excess grass growth caused by over-fertilization and light, frequent irrigation. Tim Johnson, chicagotribune.com, "Core aeration vs. power raking? Pro tips on what’s best for your lawn," 13 Apr. 2021 The team observed the human and monkey cells divide and grow together in a dish, with three of the embryos surviving 19 days after the initial fertilization. Michael Lee, Washington Examiner, "Scientists successfully create human-monkey hybrid, raising ethical questions," 19 Apr. 2021 The job is dangerous, recording fatalities every year, and doesn’t give farmers the necessary precision to make smart fertilization choices. Rebecca Szkutak, Forbes, "Guardian Agriculture Raises $10.5 Million For Its Crop-Dusting Drone Service," 6 Apr. 2021 After initial fertilization, drop to a lower nitrogen fertilizer (the first number on the label is lower) or even use foliar fertilizer or fish and seaweed fertilizer. oregonlive, "Learn to grow colorful, dazzling dahlias in Oregon," 5 Apr. 2021 The word suggests penetration, fertilization, mingling in places dim and dank. New York Times, "The Mushrooms Will Survive Us," 7 Feb. 2021 Parents are increasingly using in-vitro fertilization and deciding to have children later in life. Caroline Delbert, Popular Mechanics, "Why Humans Are Having More Twins Now Than at Any Time in History," 17 Mar. 2021 The new models correspond to about three to 10 days after fertilization, Wu said. NBC News, "Scientists say they've peeked into the 'black box' of early human development," 17 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fertilization.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fertilization

circa 1787, in the meaning defined above

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Time Traveler for fertilization

Time Traveler

The first known use of fertilization was circa 1787

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Statistics for fertilization

Last Updated

10 May 2021

Cite this Entry

“Fertilization.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fertilization. Accessed 18 May. 2021.

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More Definitions for fertilization


fer·​til·​iza·​tion | \ ˌfər-tə-lə-ˈzā-shən How to pronounce fertilization (audio) \

Kids Definition of fertilization

1 : an act or process of making fertile fertilization of a new lawn
2 : the joining of an egg cell and a sperm cell to form the first stage of an embryo


variants: or British fertilisation \ ˌfərt-​ᵊl-​ə-​ˈzā-​shən How to pronounce fertilization (audio) \

Medical Definition of fertilization

: an act or process of making fertile: as
a : an act or process of fecundation, insemination, or impregnation
b : the process of union of two gametes whereby the somatic chromosome number is restored and the development of a new individual is initiated

Other Words from fertilization

fertilize or British fertilise \ ˈfərt-​ᵊl-​ˌīz How to pronounce fertilization (audio) \ transitive verb fertilized or British fertilised; fertilizing or British fertilising

More from Merriam-Webster on fertilization

Nglish: Translation of fertilization for Spanish Speakers

Britannica.com: Encyclopedia article about fertilization

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