🤖 Not natural ⚗️ Needs extra energy

unspontaneous

7.8

A process that does not start or continue without added energy

adjective
/ˌʌnspɒnˈteɪniəs/

Specialized

: no espontáneo

The chemical reaction is unspontaneous and will not proceed unless energy is supplied.

Examples

Photosynthesis is an unspontaneous reaction that depends on sunlight as an energy source.
Because the process is unspontaneous, it requires constant heating to continue.
Don't be so unspontaneous!
His reaction was quite unspontaneous.
The chemical reaction is unspontaneous and will not proceed unless energy is supplied.
Because the process is unspontaneous, it requires constant heating to continue.
Photosynthesis is an unspontaneous reaction that depends on sunlight as an energy source.

Antonyms

spontaneous

169 4.2

Happening naturally without planning or outside cause

How Spontaneous

spontaneous

169 4.2

unspontaneous

Specialized

7.8

Surface Forms

unspontaneous positive

Morphology

unspontaneous = spontaneous (transparent) = un + spontaneous

The adjective is formed by productive negation 'un-' + 'spontaneous', so the meaning 'not spontaneous' is directly recoverable.

Etymology

The word unspontaneous is made of un- 'not' and spontaneous 'happening by itself'. So in science it means a process that will not happen on its own and needs outside energy, like a reaction that needs heat to start.