March on Washington 50 th Anniversary Stamp. Fifty years after the March on Washington for Jobs and Freedom, the U.S. Postal Service is commemorating the August 28, 1963, event with a limited-edition Forever Â® stamp.irst day of issue: August 23, 2013 Washington, DC. 1963 March on Washington is being issued as a Forever Â® stamp. Forever stamps are always equal in value to the current First-Class Mail &reg one-ounce rate, which is $0.49.
lucency. Definitions: 1. In radiology, a region in an image caused by an absorber of lower x-ray attenuation than its surrounding tissues; in general, the opposite of opacity. The definition information for lucency is provided by Stedman's. You can search our medical dictionary here.. In radiology, a region in an image caused by an absorber of lower x-ray attenuation than its surrounding tissues; in general, the opposite of opacity. The definition information for lucency is provided by Stedman's.
Latency is a noun referring to something inactive, dormant, or lying in wait. Itâs the state of not being visibly active yet â like when you're hiding out and waiting to jump up and yell Surprise!. Perhaps a little late, perhaps right on time, latency will wake up from its nap eventually.