ab

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ab

A student studies for her AB in biology.

Definition
  1. Noun:
    • The blood group whose red cells carry both the A and B antigens: In medicine and biology, "ab" refers to a specific blood type in the ABO system.
    • The muscles of the abdomen: In informal or fitness contexts, "ab" is a common short form for the abdominal muscles.
    • The eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August): In the context of the Hebrew calendar, "Ab" (often capitalized) is the name of a month.
    • A bachelor's degree in arts and sciences: An informal abbreviation for a Bachelor of Arts (B.A.) or Bachelor of Science (B.S.) degree.
Usage Examples
  • Noun (Blood Group):
    • Her blood type is AB, which is relatively rare.
    • Patients with type AB blood can receive red blood cells from any ABO type.
  • Noun (Abdominal Muscles):
    • He does sit-ups every day to strengthen his abs.
    • A strong core starts with well-developed abs.
  • Noun (Hebrew Month):
    • The fast of Tisha B'Av occurs in the month of Ab.
  • Noun (Academic Degree):
    • She earned her AB from a prestigious university.
Advanced Usage
  • "AB negative/positive": Specifying the Rh factor of the AB blood type.
    • The donor must have AB positive blood for this procedure.
  • "Six-pack abs": A colloquial term for a well-defined set of abdominal muscles.
    • The athlete is famous for his six-pack abs.
Variants and Related Words
  • ABO: The full name of the blood group system (e.g., ABO blood group system).
  • Abdomen: The full term for the body part containing the abdominal muscles.
  • Abdominal: The adjective form (e.g., abdominal pain, abdominal muscles).
  • B.A.: Bachelor of Arts, a formal equivalent for the academic degree.
  • B.S.: Bachelor of Science, a formal equivalent for the academic degree.
Synonyms
  • Blood type AB: For the blood group meaning.
  • Core muscles / Midsection: For the abdominal muscles meaning (though these are broader terms).
  • Av: An alternate transliteration for the Hebrew month.
  • Bachelor's degree: For the academic meaning.
Related Phrases
  • AB donor/recipient: Phrases used in medical contexts regarding blood transfusion compatibility.
    • An AB positive individual is a universal plasma donor.
  • Work on your abs: A common fitness instruction.
    • The trainer told the class to work on their abs during the cool-down.
ab

A student studies for her AB in biology.

Noun
  1. the blood group whose red cells carry both the A and B antigens
  2. the muscles of the abdomen
  3. the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August)
  4. a bachelor's degree in arts and sciences

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