stro·phoid
(strōfoid′)
(strōfoid′)n.
The curve traced out by points P and P′ which lie on lines through a fixed point A where the midpoint M of PP′ is on a fixed line and the absolute value |PM| = the absolute value |P′M| = the absolute value |MO|, where O is the projection of A onto that fixed line.
[Greekstrophos, twisted cord (fromstrephein, to turn; see streb(h)- in the Appendix of Indo-European roots) + –OID.]
strophoidThe equation for this strophoid is
y2
=
x2(a + x)/(a - x).
- throatily
- throatiness
- throatlatch
- throat singer
- throat singing
- throaty
- throb
- throbbingly
- throe
- thromb-
- thrombi
- thrombin
- thrombo-
- thrombocyte
- thrombocytic
- thrombocytopenia
- thrombocytopenic
- thromboembolic
- thromboembolism
- thrombokinase
- thrombolysis
- thrombolytic
- thrombophlebitis
- thromboplastic
- thromboplastically