about
: the 11th month of the civil year or the 5th month of the ecclesiastical year in the Jewish calendar see Months of the Principal Calendars Table
: the one of the four ABO blood groups characterized by the presence of antigens designated by the letters A and B and by the absence of antibodies against these antigens
1
able seaman; able-bodied seaman
2
abort; abortion
3
airborne
4
airman basic
5
Alberta
6
[New Latin artium baccalaureus]
bachelor of arts
: from : away : off
abaxial
Examples of ab in a Sentence
Recent Examples on the Web
Ryan Gaydos, FOXNews.com, 25 Aug. 2025
In May 2024, the La Jolla Traffic & Transportation Board gave its support to implementing AB 43.
—Ashley MacKin Solomon, San Diego Union-Tribune, 22 Aug. 2025
Ryan Gaydos, FOXNews.com, 25 Aug. 2025
In May 2024, the La Jolla Traffic & Transportation Board gave its support to implementing AB 43.
—Ashley MacKin Solomon, San Diego Union-Tribune, 22 Aug. 2025
Theresa Clift, Sacbee.com, 2 Sep. 2025
Multiple parents of Riverside Poly players, and a school board member, told Fox News Digital the forfeit was in response to the trans athlete on Jurupa Valley, AB Hernandez.
—Ryan Gaydos, FOXNews.com, 25 Aug. 2025
See All Example Sentences for ab
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Noun
Multiple parents of Riverside Poly players, and a school board member, told Fox News Digital the forfeit was in response to the trans athlete on Jurupa Valley, AB Hernandez.
—Ryan Gaydos, FOXNews.com, 25 Aug. 2025
In May 2024, the La Jolla Traffic & Transportation Board gave its support to implementing AB 43.
—Ashley MacKin Solomon, San Diego Union-Tribune, 22 Aug. 2025
Noun
Multiple parents of Riverside Poly players, and a school board member, told Fox News Digital the forfeit was in response to the trans athlete on Jurupa Valley, AB Hernandez.
—Ryan Gaydos, FOXNews.com, 25 Aug. 2025
In May 2024, the La Jolla Traffic & Transportation Board gave its support to implementing AB 43.
—Ashley MacKin Solomon, San Diego Union-Tribune, 22 Aug. 2025
Noun
Another bill that would have helped renters was AB 1248.
—Theresa Clift, Sacbee.com, 2 Sep. 2025
Multiple parents of Riverside Poly players, and a school board member, told Fox News Digital the forfeit was in response to the trans athlete on Jurupa Valley, AB Hernandez.
—Ryan Gaydos, FOXNews.com, 25 Aug. 2025
See All Example Sentences for ab
Cite this Entry
“Ab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ab. Accessed 9 Sep. 2025.
Copy CitationMedical Definition
ab
2 of 4 abbreviation1
or AB
abort; abortion
2
about
AB
3 of 4 noun
: the one of the four ABO blood groups characterized by the presence of antigens designated by the letters A and B and by the absence of antibodies against these antigens
AB
4 of 4 abbreviation1
aid to blind
2
[Latin artium baccalaureus]
bachelor of arts
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