double-threaded

English

Adjective

(engineering) Consisting of two threads twisted together; using two threads.
(engineering) Having two screw threads instead of one; said of a screw in which the pitch is equal to twice the distance between the centers of adjacent threads.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “double-threaded”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)