What does proboscis mean?
A proboscis is an elongated snout, trunk, or feeding organ. Its best-known referent is an elephant's trunk, a highly flexible structure used to smell, breathe, grasp objects, and convey water or food. Zoologists also use the term for the long, tube-like mouthparts of butterflies, moths, and some other animals, especially when those parts are used to draw up nectar or other liquids. The word can also be applied playfully to a conspicuously long human nose, although that sense is informal. Compared with the general word “nose,” “proboscis” is more technical and conveys flexibility, length, and specialized function. It is therefore particularly useful in wildlife biology, entomology, and natural-history writing, as well as in figurative or humorous descriptions that emphasize an unusual protruding nose.
nounA long, flexible snout or trunk, especially that of an elephant. In zoology, the term can also describe an elongated mouthpart used for feeding or probing.
- A long, flexible snout or trunk, especially that of an elephant.
- A specialized elongated mouthpart or feeding organ in certain insects and other animals.
- Informally, a conspicuously long human nose.
"The elephant curled its proboscis around the fallen branch."
"The elephant used its proboscis to lift the grass and place it in its mouth."
"The butterfly extended its slender proboscis toward the flower."
"A comic character with an enormous proboscis marched across the screen."
The standard plural is “proboscides”; “proboscises” is also encountered but is less traditional.
"Several butterflies extended their proboscides toward the flowers."
From a Greek word meaning “nose,” the proboscis became the zoological term for nature's most versatile snout.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does proboscis come from?
The word comes through Latin from the Greek proboskis, meaning “nose” or “elephant's trunk.” It entered English in the seventeenth century for a long snout, particularly that of an elephant, and was later applied to specialized animal mouthparts. The same Greek root also underlies scientific terms such as “proboscidean” and the taxonomic name Proboscidea.
Related word forms
How proboscis is actually used
In general zoological use, the word is precise but technical and especially common in descriptions of elephants and insects. It may be used humorously for a very long human nose, but that use is informal and often comic.
Easily confused with proboscis
A proboscis is the snout or trunk itself, whereas proboscidean is an adjective describing animals of the elephant family.