n. [ It., soda, in OIt., ashes used in making glass, fr. L. solida, fem. of solidus solid; solida having probably been a name of glasswort. See Solid. ] 1. (Chem.) (a) Sodium oxide or hydroxide. (b) Popularly, sodium carbonate or bicarbonate. Sodium bicarbonate is also called baking soda [ 1913 Webster ]

2. same as sodium, used in terms such as bicarbonate of soda. [ PJC ]

3. same as soda water. [ PJC ]

4. a non-alcoholic beverage, sweetened by various means, containing flavoring and supersaturated with carbon dioxide, so as to be effervescent when the container is opened; -- in different localities it is variously called also soda pop, pop, mineral water, and minerals. It has many variants. The sweetening agent may be natural, such as cane sugar or corn syrup, or artificial, such as saccharin or aspartame. The flavoring varies widely, popular variants being fruit or cola flavoring. [ PJC ]

Caustic soda, sodium hydroxide. --
Cooking soda, sodium bicarbonate. [ Colloq. ] --
Sal soda. See Sodium carbonate, under Sodium. --
Soda alum (Min.), a mineral consisting of the hydrous sulphate of alumina and soda. --
Soda ash, crude sodium carbonate; -- so called because formerly obtained from the ashes of sea plants and certain other plants, as saltwort (Salsola). See under Sodium. --
Soda fountain, an apparatus for drawing soda water, fitted with delivery tube, faucets, etc. --
Soda lye, a lye consisting essentially of a solution of sodium hydroxide, used in soap making. --
Soda niter. See Nitratine. --
Soda salts, salts having sodium for the base; specifically, sodium sulphate or Glauber's salts. --
Soda waste, the waste material, consisting chiefly of calcium hydroxide and sulphide, which accumulates as a useless residue or side product in the ordinary Leblanc process of soda manufacture; -- called also alkali waste. --
Washing soda, sodium carbonate. [ Colloq. ] [ 1913 Webster ]

n. a bicuit leavened with baking soda and with buttermilk or sour milk. [ PJC ]

n. a bread made with buttermilk and leavened with baking soda. [ PJC ]

n. a counter at which people may sit and be served soda pop, ice cream, or light meals. Such counters may be located for example in restaurants, ice cream shops, drugstores, departments stores. [ PJC ]

a. Pertaining to, or containing, soda. “Sodaic powder.” Ure. [ 1913 Webster ]

n. a person who serves soda, ice cream, similar foods from behind a soda fountain. [ PJC ]

n. [ Soda + -lite: cf. F. sodalithe. ] (Min.) A mineral of a white to blue or gray color, occuring commonly in dodecahedrons, also massive. It is a silicate of alumina and soda with some chlorine. [ 1913 Webster ]

n.; pl. Sodalities [ L. sodalitas, fr. sodalis a comrade. ] 1. A fellowship or fraternity; a brotherhood. [ 1913 Webster ]

2. (R. C. Ch.) Specifically, a lay association for devotion or for charitable purposes. [ 1913 Webster ]

n. (Chem.) A greenish or reddish crystalline substance, NaNH2, obtained by passing ammonia over heated sodium. [ 1913 Webster ]

n. a popular non-alcoholic beverage, sweetened by various means, containing flavoring and supersaturated with carbon dioxide, so as to be effervescent when the container is opened; -- in different localities it is variously called also soda, pop, mineral water, and minerals. It has many variants. The sweetening agent may be natural, such as cane sugar or corn syrup, or artificial, such as saccharin or aspartame. The flavoring varies widely, popular variants being fruit juices, fruit sirups, cream, or cola flavoring; the soda pop is usually served chilled. Several large corporations started primarily as bottlers of soda pop, such as Coca-Cola, Pepsi-Cola, and Dr. Pepper. [ PJC ]