Term: control rod: a steel or aluminum rod that can be moved up or down to control the rate of the nuclear reaction
Candidate hypernym: implement: instrumentation (a piece of equipment or tool) used to effect an end → 1
Candidate hypernym: hydronephrosis: accumulation of urine in the kidney because of an obstruction in the ureter → 0
Candidate hypernym: upgrade: software that provides better performance than an earlier version did → 0
Candidate hypernym: astronomy: the branch of physics that studies celestial bodies and the universe as a whole → 0
Candidate hypernym: fox hunter: a mounted hunter who follows the hounds in pursuit of a fox → 0
Candidate hypernym: sigeh: a Shiite tradition of temporary marriage permitted in Iran that allows a couple to specify the terms of their relationship; can last from a few minutes to 99 years → 0
Candidate hypernym: knock: the sound of knocking (as on a door or in an engine or bearing) → 0
Candidate hypernym: mile: a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters → 0
Candidate hypernym: doric order: the oldest and simplest of the Greek orders and the only one that normally has no base → 0
Candidate hypernym: bark: tough protective covering of the woody stems and roots of trees and other woody plants → 0
Candidate hypernym: systolic murmur: a murmur heard during systole → 0