spiral:1
adjective1551{ds||1|a|}
- winding around a center or pole and gradually receding from or approaching it
- helical
- spiral-bound
spiral:2
noun
spiral
\
1656{ds||1|a|}
- the path of a point in a plane moving around a central point while continuously receding from or approaching it
- a three-dimensional curve (such as a helix) with one or more turns about an axis
- a single turn or coil in a spiral object
spiral:3
verb
spiral
\
1834{ds|i|||}
- to go and especially to rise or fall in a spiral course
- to form into a spiral
- to cause to spiral
spiral binding
noun
spiral binding
\
1944
- a book or notebook binding in which a continuous spiral wire or plastic strip is passed through holes along one edge
spiral-bound
adjective1941
- having a spiral binding
spiral cleavage
noun
spiral cleavage
\
1892
- holoblastic cleavage that is typical of protostomes and that is characterized by arrangement of the blastomeres of each upper tier over the cell junctions of the next lower tier so that the blastomeres spiral around the pole to pole axis of the embryo
spiral galaxy
noun
spiral galaxy
\
1913
- a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity —called also spiral nebula
spiral of Archimedes
noun phrasecirca 1856
- a plane curve that is generated by a point moving away from or toward a fixed point at a constant rate while the radius vector from the fixed point rotates at a constant rate and that has the equation ρ = a θ in polar coordinates
spiral spring
noun
spiral spring
\
1690
- a spring consisting of a wire coiled usually in a flat spiral or in a helix
spiral staircase
noun
spiral staircase
\
- a set of stairs that winds around a central post or column
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