Volumic refers to an object or substance that has a specific volume or occupies a certain amount of space. Some synonyms for volumic include volumetric, spatial, dimensional, and capacity-related. These terms are often used in scientific or mathematical contexts to describe the amount of material present in a given space. Additionally, words such as size, magnitude, and volume can be used to convey similar concepts to volumic. It's important to choose the correct synonym based on the specific context of the sentence, as each word can have slightly different connotations and meanings.