: any of various diseases or infections (as gonorrhea, genital herpes, chlamydia, hepatitis B, or HIV) that are typically transmitted by direct sexual contact but may sometimes be spread by nonsexual means (as childbirth or sharing needles) : sti
doctor of sacred theology
Examples of std in a Sentence
Noun
a discussion of AIDS and other STDs
Recent Examples on the Web
Melissa Rudy, FOXNews.com, 16 Oct. 2025
It's built according to MIL-STD 810H standards to take a licking.
—PC Magazine, 9 Oct. 2025
Elizabeth Finley, interim executive director of the National Coalition of STD Directors, says part of the problem is that pregnant people’s access to health care or preventive syphilis care may vary.
—Chantelle Lee, Time, 26 Sep. 2025
More than 200 employees had their firings rescinded at the CDC’s National Center for HIV, Viral Hepatitis, STD and Tuberculosis Prevention, along with 158 at the National Center for Environmental Health, an HHS spokesperson confirmed.
—Meg Tirrell, CNN Money, 11 June 2025
Communications representatives within the CDC’s HIV and STD prevention departments did not return requests for comment; last week, the Trump administration ordered all employees of HHS, which includes the CDC, to stop communicating with external parties.
—Benjamin Ryan, NBC News, 31 Jan. 2025
In a November survey by the National Coalition of STD Directors, 68% of health departments that responded said the drug shortage will cause syphilis rates in their area to increase, further crushing the nation’s most disadvantaged populations.
—Anna Maria Barry-Jester, ProPublica, 4 Mar. 2024
The National Coalition of STD Directors applauded the FDA’s action.
—Ike Swetlitz, Fortune Well, 10 Jan. 2024
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Noun
Atypical pneumonias are caused by mycoplasma, legionella and kinds of chlamydia (not STD) and pertussis, the doctor added.
—Melissa Rudy, FOXNews.com, 16 Oct. 2025
It's built according to MIL-STD 810H standards to take a licking.
—PC Magazine, 9 Oct. 2025
Elizabeth Finley, interim executive director of the National Coalition of STD Directors, says part of the problem is that pregnant people’s access to health care or preventive syphilis care may vary.
—Chantelle Lee, Time, 26 Sep. 2025
More than 200 employees had their firings rescinded at the CDC’s National Center for HIV, Viral Hepatitis, STD and Tuberculosis Prevention, along with 158 at the National Center for Environmental Health, an HHS spokesperson confirmed.
—Meg Tirrell, CNN Money, 11 June 2025
Communications representatives within the CDC’s HIV and STD prevention departments did not return requests for comment; last week, the Trump administration ordered all employees of HHS, which includes the CDC, to stop communicating with external parties.
—Benjamin Ryan, NBC News, 31 Jan. 2025
In a November survey by the National Coalition of STD Directors, 68% of health departments that responded said the drug shortage will cause syphilis rates in their area to increase, further crushing the nation’s most disadvantaged populations.
—Anna Maria Barry-Jester, ProPublica, 4 Mar. 2024
The National Coalition of STD Directors applauded the FDA’s action.
—Ike Swetlitz, Fortune Well, 10 Jan. 2024
Cite this Entry
“Std.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/std. Accessed 17 Nov. 2025.
Copy CitationMedical Definition
STD
abbreviation or noun
: any of various diseases or infections (such as gonorrhea, genital herpes, chlamydia, hepatitis B, or HIV) that are typically transmitted by direct sexual contact but may sometimes be spread by nonsexual means (such as childbirth or sharing needles) : sti
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