Noun
TSD (uncountable)
(pathology) Initialism of Tay-Sachs disease.
There are no examples of temperature-dependent sex determination (TSD) in birds. Source: Internet
In 2013, it was reported that PDP-11 programmers would be needed to control nuclear power plants through 2050. citation Another use was for storage of test programs for Teradyne ATE equipment, in a system known as the TSD (Test System Director). Source: Internet
For others species using TSD, it is exposure to temperatures on both extremes that results in offspring of one sex, and exposure to moderate temperatures that results in offspring of the opposite sex. Source: Internet