 | Amalgam In alchemy and chemistry, an amalgam is an alloy of mercury and another metal or ammonia |
 | Amalgam (alternate) In alchemy, an amalgam is a combination of two different metals. |
 | Amarillo Tartan Designed by Phil Smith in 1996 for the City of Amarillo, Texas. |
 | Amazonite Alkali feldspar mineral, a stone that represents harmony, healing and prosperity. Known as the "stone of truth". |
 | Amber When describing amber, using the word “gemstone” can be awkward, since amber is not technically a stone at all. Nonetheless, it has been used as ornamentation for thousands of years and has acquired … |
 | Amenta This symbol represents the Underworld or Land of the Dead. |
 | American Atheists Founded in 1963, American Atheists is a major player in the ongoing battle to separate religious teachings from government proceedings. |
 | American College of Radiology The American College of Radiology, founded in 1923, is a non-profit professional medical association composed of diagnostic radiologists, radiation oncologists, interventional radiologists, nuclear m… |
 | American Forces Radio and Television Service This is the logo of AFRTS |
 | American Medical Association |
 | American Museum of Natural History Founded in 1869, the American Museum of Natural History has evolved into one of the world’s premier scientific collections and research institutions. |
 | Amethyst Like many gemstones, the amethyst possesses a number of different symbolic meanings. |
 | Ammeter Symbol An ammeter is a measuring instrument used to measure the electric current in a circuit. |
 | Ammonia (alchemy) A symbol used in 18th century chemistry to indicate ammonia. |
 | Ammonium salt (alchemy) One of the alchemical signs for ammonium salt, also known as "sal ammoniacus". |
 | Ammonium salt (alternate #1) One of the alchemical signs for ammonium salt, also known as "sal ammoniacus". |
 | Ammonium salt (alternate #2) One of the alchemical signs for ammonium salt, also known as "sal ammoniacus". |
 | Ammonium salt (alternate #3) A sign for ammonium salt, also known as "sal ammoniacus", used in 18th century chemistry. |
 | Ammonium salt (alternate #4) A symbol used to represent ammonium salt in 17th century chemistry. |
 | Ammonium salt (alternate #5) A symbol used to represent ammonium salt in 17th century chemistry. |
 | Amor incondicional Símbolo celta del amor incondicional |
 | Ampersand An ampersand (or epershand; "&") is a logogram representing the conjunction word "and". This symbol is a ligature of the letters et, Latin for "and". |
 | Amphitheater Amphitheater |
