7-Letter Words Starting: HELI

• type genus of the family Helicidae

• a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle

• a structure consisting of something wound in a continuous series of loops

• A small landing place for helicopters, denoted by a large "H".

• A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.

• A small volute under the abacus of a Corinthian capital.

• The incurved rim of the external ear.

• An upside down midair 360° spin in playboating.

• a tuba that coils over the shoulder of the musician

• in the shape of a coil

• a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)