What does turnsole mean?
Turnsole is a chiefly British botanical name for a heliotrope, especially Heliotropium europaeum, an annual herb in the borage family. Its common historical association comes from the way the plant's small flowers appear to turn toward sunlight, a response known as heliotropism. The word is principally encountered in botanical, horticultural, and older literary contexts rather than in ordinary conversation. Although turnsole can refer more broadly to plants of the genus Heliotropium, the name is especially associated with European heliotrope, a wild plant with pale or lilac flowers that has long appeared in English herbals and garden histories. In American usage, heliotrope is much more common and may also evoke the related garden plant commonly called garden heliotrope. Turnsole is therefore useful chiefly as a precise regional and historical synonym, while also recalling the older scientific practice of naming plants by visible movements and appearances.
nounA chiefly British name for a heliotrope, especially the European heliotrope, Heliotropium europaeum, an annual herb noted for its small flowers that turn toward sunlight.
- A plant of the genus Heliotropium, especially the European heliotrope, Heliotropium europaeum.
"A patch of turnsole grew beside the garden wall, its pale flowers turning toward the morning sun."
"The botanist identified the plant as European heliotrope, or turnsole, after examining its clustered flowers."
"Turnsole was historically listed among medicinal herbs valued for its fragrant leaves."
The plural is normally written as one word, though older sources sometimes hyphenate it.
"The herbarium contains pressed specimens of several turnsoles gathered from coastal dunes."
Turnsole is named for the sun: its small flowers were famed for turning toward it, making each bloom a tiny botanical compass.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does turnsole come from?
Turnsole comes through French tournesol, literally “turn toward the sun,” formed from tourner, “to turn,” and soleil, “sun.” The name reflects the traditional observation that heliotrope flowers follow the direction of sunlight. English borrowed the French botanical term and also developed it as a regional synonym for heliotrope.
How turnsole is actually used
Turnsole is chiefly a British botanical name and is relatively uncommon in everyday speech. In American English, heliotrope is the more familiar term.