Definition of preloads:
(v) :
(transitive) To load in advance (used especially in reference to software installed on a computer prior to sale).
(v) :
(intransitive, British, slang) To drink (cheaper) alcohol at home before going out socially.
(n) :
(engineering) The internal application of stress to certain mechanical systems.
(n) :
(anatomy) The end diastolic pressure that stretches the right or left ventricle of the heart to its greatest geometric dimensions under variable physiologic demand.