What does intracellularly mean?
Intracellularly is an adverb meaning inside a cell or within the cellular environment. It is especially common in biology, molecular biology, medicine, and pharmacology, where researchers describe where substances are located or where biological processes occur. For example, a drug may act intracellularly by binding to a receptor within a cell, while a virus may produce its components intracellularly before assembling them outside the cell. The term distinguishes processes that happen within a cell from extracellular processes, which take place outside cells or in the surrounding tissue. Although “intracellularly” can appear in specialist research writing, “inside the cell” is often more accessible in general prose. The word is derived from the Latin prefix intra-, meaning “within,” combined with cellular, meaning “relating to cells.”
adverbInside or within a cell; in the internal space or environment of a cell.
- Inside or within a cell.
"The compound acts intracellularly by inhibiting an essential viral enzyme."
"Many bacterial toxins exert their effects intracellularly, targeting proteins within the host cell."
"The protein is expressed intracellularly and then transported to the cell membrane."
From Latin intra, meaning “within,” and cellular, meaning “relating to cells,” the word precisely identifies something located inside the cell rather than merely associated with it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does intracellularly come from?
The word was formed from the Latin prefix intra-, meaning “within,” the element cellular, and the adverbial suffix -ly. Cellular ultimately comes from Latin cellula, a diminutive of cella, meaning “small room” or “cell.” The modern biological meaning developed through the comparison of processes occurring within cells with those occurring between or outside them.
Related word forms
How intracellularly is actually used
This is primarily technical vocabulary in cell biology, molecular biology, and pharmacology. In general writing, “inside the cell” is usually clearer.