spontaneity
n.n. the quality of being able to act or react quickly and naturally without thinking about it first. In biology, it describes a process that happens naturally without being caused by a specific person or thing.
n. the quality of being able to act or react quickly and naturally without external prompting. In a biological context, it refers to a process or reaction that occurs naturally and without deliberate intervention.
The spontaneity of the reaction surprised the scientists.
The spontaneity of the chemical reaction allowed the researchers to produce the compound much faster than expected.
The spontaneity of the cellular response to the stressor suggests that the organism has evolved a highly efficient and immediate defense mechanism against environmental changes.
From Latin spontaneus (“voluntary”). By surface analysis, spont(aneous) + -aneity. Compare French spontanéité.