sunflower

Any of several plants of the genus Helianthus of the composite family, especially H. annuus, having tall coarse stems and large, yellow-rayed flower heads that produce edible seeds rich in oil.

A brilliant yellow to strong or vivid orange yellow.

A plant of the genus Helianthus, so named from its showy golden radiate heads.

The rock-rose or sun-rose. See Helianthemum.

The marigold, Calendula officinalis, from its opening and closing with the ascent and descent of the sun.

In civil engineering, a full-circle protractor arranged for vertical mounting on a tripod.

In writing-telegraphs and other electrical instruments and apparatus, a series of alternate conducting and insulating segmental pieces or tablets symmetrically arranged in circular form, each conducting piece being connected with a source of electricity and also with the ground.

Any plant of the genus Helianthus; — so called probably from the form and color of its flower, which is large disk with yellow rays. The commonly cultivated sunflower is Helianthus annuus, a native of America.

Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers; the commonly cultivated sunflower is Helianthus annuus, a native of America.

a bright yellow, like that of the flower petals.