n. [ Dim. fr. L. moles a mass: cf. F. molécule. See 3d Mole. ] 1. One of the very small invisible particles of which all ordinary matter is supposed to consist. [ 1913 Webster ]
2. (Physics) The smallest part of any substance which possesses the characteristic properties and qualities of that substance, and which can exist alone in a free state. [ 1913 Webster ]
3. (Chem.) A group of atoms so united and combined by chemical affinity that they form a complete, integrated whole, being the smallest portion of any particular compound that can exist in a free state; as, a molecule of water consists of two atoms of hydrogen and one of oxygen. Cf. Atom. [ 1913 Webster ]
You know the meaning of this word? click [add this word] to add this word to our database with its meaning, to impart your knowledge for the general benefit
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย