trimount

tri- +‎ mount

trimount (plural trimounts)

1. (heraldry) A stylized depiction of three hills or mountains.
   • 1987, Veronika Birke & ‎Walter L. Strauss, The Illustrated Bartsch, →ISBN, page 131:

     The allegorical figures standing on trimounts appear like guardians, flanking an archway formed by two fruit trees which frame the composite coat of arms.

   • 1993, Ars Decorativa - Issues 13-15, page 21:

     On the shield of king Saint Stephen, the silver patriarchal cross on a trimount symbolizes royal power, the jupon worn over his armour is decorated by the family coat-of-arms of the Árpád dynasty.

   • 2004, Donald Campbell Spangler, Spangler:

     The Spengler Arms According to Siebmacher 's Wappenbuch and Riestap's Armoral General, the ancient (Nuremberg Spengler arms), were: Gules, a beaker argent on a trimount or: in other words, "a red shield emblazoned with a silver beaker resting on three golden hills.

2. A bracket or other supporting device that holds three attachments.
   • 1949, Radio & Television News - Volume 42, page 11:

     And snap-in trimounts holding back covers of radios, etc. Handy knob puller too.

   • 1978, Leon Cantor, How to select and install antennas, →ISBN, page 47:

     Trimounts can be used in a wide variety of ways. Choose the type of mount that is easiest for the type of roof on which you are working.

   • 2010, J. L. Bourne, Beyond Exile: Day by Day Armageddon, →ISBN, page 228:

     The third mode of operation used the magnetic and suction trimounts included in the case.

trimount (not comparable)

1. Mounted in three places.
   • 1949, Federation of American Societies for Experimental Biology, ‎American Physiological Society, Federation Proceedings - Volume 8, Issue 1, page 104:

     Venous pressures were measured directly in 2 (2) subjects at l0g. using a vein in the forearm and recording pressures by means of a trimount inductance gauge.

   • 2009, Jeff Wilson, The Model Railroader's Guide to Diesel Locomotives, →ISBN, page 55:

     Six-axle A1A (center axle unpowered) Alcos used single-drop-equalizer trucks with a short wheelbase (10'5") and even axle spacing; units with all axles powered used a trimount double-equalized truck with uneven spacing and a 12'6" wheelbase.