The word "Osmoses" refers to the movement of molecules from a lower concentration to a higher concentration, through a semipermeable membrane. Antonyms for this word may include diffusion, which refers to the movement of particles from a higher concentration to a lower concentration. Another antonym can be filtration, which involves separating particles from a mixture based on size or molecular weight. In contrast to osmosis, exocytosis refers to the release of substances from a cell into the extracellular space or environment. Synonyms for opposite meanings of words can help to better understand and communicate complex scientific concepts.