Final answer:
The suffix -sion in the word 'explosion' denotes a state or condition that transforms a verb into an abstract noun, indicating the action or outcome of the verb.
Step-by-step explanation:
In English grammar, the suffix -sion in the word explosion indicates a state or condition. This suffix often transforms verbs into abstract nouns that embody the action or result of the verb. For example, the verb 'explode' becomes the noun 'explosion,' indicating the act or process of exploding, or the result thereof. Similarly, the verb 'decide' becomes 'decision,' which represents the act or process of deciding. In essence, the suffix -sion, which is a variation of the suffix -ion, denotes the concept derived from the base verb, typically referring to the conclusion or lasting state of its action.