spiral line n.
See intertrochanteric line.
With an extremely thin thread, she describes from spoke to spoke, starting from the center, a spiral line with very close coils.
Inner rings of the disk (two or three) concentric, outer rings (three or four) spirally convoluted, spiral line simple.
Sinistrorse, sin′is-trors, adj. rising from left to right, as a spiral line.
All rings of the disk not concentric, convoluted in a simple, regular, spiral line; all nearly of equal breadth.
Of course, it was not exactly a circle he traced, but a spiral line constantly narrowing inward upon the game.
Then the first block is cut down to the ground and the top of the row is slanted so as to form one thread of a spiral line.
Inner rings of the disk (four or five) concentric, outer rings (three or four) spirally convoluted, spiral line simple.
Sometimes the bird takes to ascending in a spiral line, and then the flight is as beautiful as it is strong.
Subspiral, sub-spī′ral, adj. somewhat spiral: indistinctly marked with a spiral line.
When one stands properly on one foot a spiral line from the top of the head to the foot is developed.