the occurrence of a uniting of separate parts

gather in a mass, sum, or whole

have or possess in combination

(genetics) a combining of genes or characters different from what they were in the parents

(physics) a combining of charges or transfer of electrons in a gas that results in the neutralization of ions; important for ions arising from the passage of high-energy particles

combining into a solid mass

an event that combines things in a mixture

an occurrence combining miscellaneous things into a (more or less) rounded mass