What does dextrorse mean?
Dextrorse is a technical botanical adjective describing a twining plant stem that climbs by spiralling upward to the right — that is, clockwise when viewed from above. The term applies mainly to climbing plants such as bindweed and morning glory, whose stems wind around supports in a direction characteristic of their species. Its counterpart is sinistrorse, which describes stems that twist upward to the left, as honeysuckle famously does. Derived from the Latin dexter, meaning 'on the right' or 'skillful', dextrorse belongs to the same family of words as dexterity and dextral. Because it encodes handedness — a surprisingly consistent trait in the plant kingdom — it appeals not only to botanists but also to anyone intrigued by asymmetry in nature. Though rarely encountered outside scientific literature, it offers a precise way to describe the elegant geometry of a coiling vine.
adjectiveTwining or spiralling upward in a rightward, clockwise direction when viewed from above; used chiefly of climbing plant stems.
- (of a twining plant stem) rising in a spiral that turns to the right, clockwise as seen from above.
"The bindweed's dextrorse stems coil clockwise around any available support."
"Morning glory is dextrorse, winding clockwise up its support."
"The botanist noted that the specimen's dextrorse habit distinguished it from the sinistrorse honeysuckle nearby."
Whether a climbing plant coils left or right is fixed by its species — and 'dextrorse' is the word botanists use for the clockwise ones.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dextrorse
Dextrorse comes from Latin dexter, meaning 'right-hand' or 'on the right', combined with an element related to rising or turning, via New Latin usage in scientific description. It shares its root with English words such as dextral, dexterity, and ambidextrous, all of which preserve the Latin sense of 'right'. The word entered English scientific vocabulary in the eighteenth century as botanists formalized terminology for describing the direction in which twining plants climb.
How dextrorse is actually used
A technical term used almost exclusively in botany; rare outside scientific writing.
Easily confused with dextrorse
Sinistrorse describes a stem that twines upward to the left (anticlockwise), the opposite direction from dextrorse.