What does clonal mean?
Clonal is a scientific adjective describing anything related to, or produced by, a clone—that is, an organism or cell line that is genetically identical to its parent. When reproduction is clonal, new individuals arise without the mixing of genetic material that sexual reproduction involves, as when a plant is grown from a cutting or a bacterium divides. The word appears most often in biology, agriculture, and medicine: vintners speak of clonal selection when choosing vines that faithfully reproduce a prized variety, and immunologists refer to clonal expansion when specific immune cells multiply to fight infection. Because clonal lineages preserve exact genetic identity, the term carries connotations of uniformity—sometimes desirable, as in consistent crops, and sometimes risky, as when genetically identical populations lack the variation needed to resist disease. It is a precise, formal word with little figurative use outside scientific discussion.
adjectiveRelating to, consisting of, or derived from a clone or clones; produced by asexual reproduction so that offspring are genetically identical to the parent.
- Relating to or produced by cloning or asexual reproduction, yielding organisms genetically identical to the parent.
- (Immunology) Relating to the clonal selection theory, in which specific lymphocytes are activated and multiplied in response to an antigen.
"The vineyard's oldest vines are propagated by clonal selection to preserve their distinctive character."
"Banana plantations rely on clonal reproduction because cultivated bananas are seedless."
"Burnet's clonal selection theory transformed our understanding of how antibodies are produced."
Every navel orange you've ever eaten is a clonal descendant of a single mutated tree grown in Brazil in the 1800s.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of clonal
The adjective clonal derives from clone, which was coined in the early twentieth century from the Greek 'klōn', meaning a twig or slip—a fitting source for a word about plants grown from cuttings. The Greek noun traces back further to a root meaning a young shoot or branch. As the science of genetics developed, 'clone' acquired broader biological meaning, and the adjective form became standard in scientific literature.
Related word forms
How clonal is actually used
Primarily a technical term used in biology, agriculture, horticulture, immunology, and medicine. In everyday speech it is rare, though 'clone' and its derivatives have entered popular usage through science fiction and computing contexts.
Easily confused with clonal
'Chronal' relates to time (from Greek chronos), while 'clonal' relates to genetically identical copies derived from a single ancestor.