noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A heliotrope; so named because its flowers are supposed to turn toward the sun. countable, uncountable
2. 2
   A sunflower. countable, uncountable
3. 3
   A sun spurge (Euphorbia helioscopia). countable, uncountable
4. 4
   The euphorbiaceous plant Chrozophora tinctoria. countable, uncountable
5. 5
   A purple dye obtained from Chrozophora tinctoria. countable, uncountable

Show 1 more definition

6. 6
   litmus countable, obsolete, uncountable

Synonyms

All synonyms

foliumheliotropesunflower

Etymology

French tournesol

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.