Sigillography, n. ~ The study of seals. Rt: seal signature

skippet, n. ~ A small box, usually wood or metal, used to protect a seal that is attached
to a document.
slide, n. ~ 1. Photography · A positive photographic image on transparent film that
has been mounted to facilitate projection. – 2. Science · A piece of glass used to
hold a specimen for viewing under a microscope.
DF: transparency
BT: photograph
RT: lantern slide
Notes: Slide1 connotes a 35 mm transparency in a 2 _ 2 inch mount designed
for use in a projector, although the term is used to describe similar formats in
other sizes. A super slide is made from a larger size film, also mounted in a 2 _ 2
inch mount, but with greater ratio of image-to-mount area.
sling psychrometer ~ see: psychrometer
slip law, n. ~ The first official publication, issued before being included in general
laws, of a bill that has been made law.
BT: Broader Term • NT: Narrower Term • RT: Related Term • DF: Distinguish From
363 soft focus
BT: law
Notes: A slip law may be a single sheet or a small pamphlet.
slip sheet, n. ~ 1. A thin, smooth paper or other material inserted under a window
mat to protect the mounted work. – 2. Printing · A leaf inserted between printed
works to prevent the transfer of the image from the surface of one work to the
back of an adjacent work. – 3. Printing · The process of inserting dummy pages
in a work to indicate where separately printed illustrations are to be inserted.
RT: barrier sheet
Notes: Slip sheets3 often have figure numbers, titles, and other notes that aid in
proper placement of the illustrations.
slipcase, n. ~ A cover, open on one side, designed to slide over and protect an item.
BT: container
Notes: Slipcases made from two pieces of heavy board were often used for
individual phonograph records. For books and albums, the slipcase usually has
five sides of board; the spine is usually visible through the open side.