[in-fur-tl or, esp. British, -tahyl]
not fertile; unproductive; sterile; barren: infertile soil.

1590–1600; < Latin infertilis. See in-3, fertile

infertilely, adverb
infertility, infertileness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
infertile (ɪnˈfɜːtaɪl)
1.  not capable of producing offspring; sterile
2.  (of land) not productive; barren

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

infertile in·fer·tile (ĭn-fûr'tl)
Incapable of producing offspring; sterile.

infertility in·fer·til·i·ty (ĭn'fər-tĭl'ĭ-tē)

  1. Absent or diminished fertility.

  2. The persistent inability to achieve conception and produce an offspring.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
infertile   (ĭn-fûr'tl)  Pronunciation Key 
  1. Not capable of reproducing.

  2. Not capable of developing into a complete organism, as infertile eggs.

  3. Relating to soil or land that is not capable of supporting or is unfavorable to the growth of plants.

infertility   (ĭn'fər-tĭl'ĭ-tē)  Pronunciation Key 
The inability to achieve conception after persistent attempts over a given period of time, usually one year in humans.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


the inability of a couple to conceive and reproduce. Infertility is defined as the failure to conceive after one year of regular intercourse without contraception or the inability of a woman to carry a pregnancy to a live birth. Infertility can affect either the male or the female and can result from a number of causes. About 1 in every 10 couples is infertile, or somewhere between 10 and 15 percent of the population

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Physician referral services, a member-to-member contact system, and
  publications about infertility can be found here.
The result: inbreeding, which scientists believe cause genetic defects and
Novel device could aid the treatment of infertility.
Novel device could aid the treatment of infertility.
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