::placeholder. The ::placeholder pseudo element (or a pseudo class, in some cases, depending on the browser implementation) allows you to style the placeholder text of a form element. As in, the text set with the placeholder attribute: <input type=email placeholder=jane@firefly.com>.
Australian Capital Territories. As of 1996 A.C.T. changed it's name to ACT. It no longer stands for American College Testing since they do so many other things besides just the testing.
ACT ACT Cardiology (1) Angioplasty Compliance Trial (2) Attacking Claudication with Ticlopidine; Arteriopathie Chronique Ticlopidine. A statistically weak clinical trial assessing the effect of ticlopidine in managing patients with intermittent claudication.