What does cellular mean?
Cellular is an adjective meaning relating to or composed of cells. Its primary sense belongs to biology and medicine, where it describes anything occurring at or involving the level of living cells — cellular respiration, cellular damage, cellular growth. By extension it can describe materials with a compartmentalized or porous internal structure, such as cellular concrete or foam. A second major sense comes from telecommunications: a cellular network divides a region into small zones called cells, each served by its own transmitter, which is why mobile phones are sometimes called cellular phones. The word carries a technical, scientific connotation rather than any emotional coloring, making it standard in academic writing and everyday tech vocabulary alike. Derived forms such as multicellular and unicellular extend its reach across the life sciences, and its root, the Latin cella meaning a small room, quietly links it to words like cellar.
Relating to or consisting of cells, especially the living cells of an organism.
"Cellular respiration converts glucose and oxygen into energy within the body's cells."
Most common in biological and medical contexts.
Having a structure divided into small compartments, or containing cavities or pores.
"The insulating panel was filled with lightweight cellular material."
Common in materials science and construction.
Of or relating to a wireless telecommunications network organized into geographic cells served by fixed transmitters.
"He lost his cellular signal while hiking in the mountains."
Chiefly used in phrases like "cellular network" or "cellular data"; British English prefers "mobile" in everyday speech.
Every call you make rides on a 'cellular' network because your city is carved into honeycomb-shaped zones called cells — a design borrowed straight from biology.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cellular
Cellular derives from the Latin cella, meaning a small room or storeroom, combined with the adjectival suffix -ar. It entered English in the mid-18th century, first used to describe things made up of small compartments, before biologists adopted it to refer to the cells of living tissue after cell theory developed in the 19th century. It shares this Latin root with "cell," "cellar," and "cellulose," and the telecommunications sense arose in the late 20th century from the honeycomb arrangement of radio coverage areas known as cells.
Related word forms
How cellular is actually used
"Cellular" is neutral to technical in register and appears frequently in biology and medicine. In telecommunications contexts, "cellular" increasingly competes with "mobile" (BrE) and "cell phone" (AmE); "mobile" is the more common everyday term in British English, while American English retains "cellular" chiefly in formal or technical phrasing such as "cellular network" or "cellular data."
Easily confused with cellular
"Celery" is a crunchy green vegetable, while "cellular" means relating to cells; the words merely sound somewhat similar.