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intermediate

intermediate

1 8.0
A temporary substance that appears before the final product in a chemical reaction
  • noun
  • /ˌɪntərˈmiːdiət/
  • Specialized
translation icon : intermedio
  • In the lab, researchers analyzed an intermediate that was crucial for the synthesis of the new drug.
  • intermediates and transition states
  • type of intermediate
  • P-type intermediate

Examples

  • One pathway for the biodegradation of trichloroethylene and tetrachloroethylene, for instance, includes the problematic compound vinyl chloride as an intermediate.

    Academic text (1991)
  • You actually have an association to give it in a stable intermediate followed by dissociation.

  • The intermediate was later used in a final product.

    Academic text (2007)
  • We know that this intermediate concentration is very small.

  • His pioneering work in 1973 found nitrous oxide to be an important intermediate in the formation of NOx in lean, high-intensity combustion.

    Academic text (2004)
  • The chemical reaction produced several intermediates that eventually formed the final product.

  • During the experiment, we discovered that the intermediates formed could significantly affect the reaction rate.

Compounds

intermediate host
  • Specialized
1 7.4

A living thing that a parasite uses for part of its life before moving to its final animal or person

9.9

A rope or wire attached partway up a mast between other ropes to help keep the mast steady

A blood vessel on the temple that brings blood to the middle part of the brain near the ear

9.9

A particle that carries the weak force between tiny particles like electrons and quarks

7.4

A grass from Asia grown for animal feed and to protect soil and sometimes used as a grain crop

How Stable

product
313 1.0
intermediate
  • Specialized
1 8.0
transition
449 3.7

Surface Forms

intermediate singular
intermediates plural

Morphology

intermediate = mediate (semi-transparent) = inter + mediate

The chemical meaning 'a transient in-between species' is conceptually linked to 'between' but is specialized technical vocabulary not obvious to all learners.

Etymology

Intermediate in chemistry keeps the same image: it is a substance formed 'between' the first chemicals and the final product, a temporary 'middle' stage in the reaction. So a chemical intermediate exists for a short time before the final substance appears.