noun🔗Share正中面(rare outside entomology) The mesial plane dividing the body into similar right and left halves."The surgeon carefully marked the patient's abdomen along the meson before making the incision, ensuring symmetrical access for the procedure. "外科医は、手術のために左右対称なアクセスを確保するため、切開を行う前に患者の腹部を正中面に沿って慎重にマーキングしました。anatomybodybiologyinsectChat with AIVocabulary GamePractice Reading
noun🔗Share中間子A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.)"Physicists study mesons to understand the forces that hold the nucleus of an atom together. "物理学者は、原子核を結合する力を理解するために中間子を研究します。physicsmassChat with AIVocabulary GamePractice Reading
noun🔗Share中間子(now specifically) An elementary particle that is composed of a quark and an antiquark, such as a kaon or pion. (Mesons composed of rarer quarks are much heavier.)"Physicists study the properties of a meson, a type of particle made of a quark and an antiquark. "物理学者は、クォークと反クォークでできた粒子の一種である中間子の性質を研究しています。physicselementChat with AIVocabulary GamePractice Reading
