ENGLISH
REFERENCE

intermediate

n. countable
C1 Advanced Oxford US //ˌɪnɝˈmidiɪt// in·ter·me·di·ate Academic

n. a substance that is made during a middle step of a chemical process. It is not the starting material or the final product, but something that exists briefly in between.

n. a molecular entity that is formed from the reactants and reacts further to give the directly observed products of a chemical reaction. It represents a local minimum on a potential energy surface and has a finite lifetime.


SIMPLE

The chemist identified a short-lived intermediate during the reaction.

CONTEXTUAL

Researchers are studying the carbon intermediate to understand how the catalyst speeds up the overall process.

COMPLEX

The reaction mechanism involves a highly reactive radical intermediate that must be stabilized at low temperatures to prevent the formation of unwanted side products.

Synonyms
Antonyms
Etymology 1

Borrowed from Medieval Latin intermediātus, perfect passive participle of intermediō (see -ate (adjective-forming suffix)), further from intermedius (“intermediate”) + -ō (verb-forming suffix).

Etymology 2

From a substantivization of the above adjective, see -ate (noun-forming suffix) and Etymology 1 for more.

Etymology 3

Borrowed from Medieval Latin intermediātus, see -ate (verb-forming suffix) and Etymology 1 for more.

Usage

Commonly used in technical contexts to describe a transitional state or substance; often paired with adjectives like 'reactive', 'stable', or 'transient'.

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