molecule meaning

  • A molecule /ˈmɒlɪkjuːl/ is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge.
  • In the kinetic theory of gases, the term molecule is often used for any gaseous particle regardless of its composition. According to this definition, noble gas atoms are considered molecules despite being composed of a single non-bonded atom.
  • A molecule may be homonuclear, that is, it consists of atoms of a single chemical element, as with oxygen (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (H2O).
FR molécule

    Definition of molecule in English Dictionary

  • NounPLmoleculesPLmoleculæSUF-ule
    1. (chemistry) The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.
      1. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom. This system splits water molecules and delivers some of their electrons to other molecules that help build up carbohydrates.
    2. A tiny amount.
    3. More Examples
      1. Used in the Middle of Sentence
        • Small cell signaling molecules like astakines play a role in hemocyte proliferation [68 ,69 ].
        • To determine the possible mechanism by which substances can act to promote gastroprotection, several antioxidants molecules such as quercetin and curcumin were previously investigated.
        • One more of them, gastrotropin from various species, is reported to crystallize with 2 molecules of other natural ligands per protein molecule [42 –44 ].
      2. Used in the Ending of Sentence
        • For some experiments, DCs were incubated with biopharmacological inhibitors to various molecules.
        • Unstimulated (negative control) and stimulated cells were fixed and permeabelized to allow intracellular staining of phosphorylated signaling molecules.
        • Here we evaluated the response of EHTs to hypoxia/reoxygenation (H/R) and the effect of known cardiocytoprotective molecules.
    • Part-of-Speech Hierarchy
      1. Nouns
        • Countable nouns
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      1. en molecules
      Source: Wiktionary

      Meaning of molecule for the defined word.

      Grammatically, this word "molecule" is a noun, more specifically, a countable noun.
      Difficultness: Level 5
      Easy     ➨     Difficult
      Definiteness: Level 8
      Definite    ➨     Versatile