abdominal
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1 related to the stomach area (adj.) B2 Upper Intermediate Medicinerelating to the part of your body that contains your stomach and other organs.
pertaining to the abdomen or the cavity between the thorax and the pelvis.
ExampleHe went to the doctor because he was having sharp abdominal pains.
ExampleThe surgeon noted that the patient exhibited significant abdominal swelling, suggesting a potential issue with the internal organs.
UsageUsually placed before a noun.
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2 stomach muscles (n.) B2 Upper Intermediate Informalone of the muscles in your stomach area.
an abdominal muscle, typically used in the plural to refer to the core musculature.
ExampleYou need to strengthen your abdominals to help with your back pain.
ExampleThe fitness instructor emphasized that while many clients focus on their abdominals for appearance, core stability is the primary functional benefit.
UsageAlmost always used in the plural form 'abdominals'.
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3 fish anatomy (adj.) C2 Proficiency Technical Sciencehaving fins located on the bottom part of the body.
describing fish that have ventral fins located on the abdomen, posterior to the pectoral fins.
ExampleThe scientist identified the species by looking at its abdominal fins.
ExampleThe classification of these teleost fish relies heavily on the abdominal position of the pelvic girdle relative to the pectoral fins.
First attested in 1746. From New Latin abdōminālis, from Latin abdōmen. Equivalent to abdomin- + -al. Compare French abdominal.