We found one dictionary that defines the word solid propellants:

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1. solid propellants: Collins English Dictionary

▸ Words similar to solid propellants ▸ Usage examples for solid propellants ▸ Idioms related to solid propellants ▸ Wikipedia articles (New!) ▸ Words that often appear near solid propellants ▸ Rhymes of solid propellants ▸ Invented words related to solid propellants