alkali — meaning in English

English meaning

alkali noun A strong chemical base, such as soda or potash, that dissolves easily and reacts with acids to form salts.
base noun The lowest part of something, on which it stands or rests; a foundation.

alkali is used for these senses in English:

alkali (chemistry) One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing characteristics are dissolving in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
base (chemistry) Any of a class of generally water-soluble compounds that turn red litmus blue and react with acids to form salts.

noun A strong chemical base, such as soda or potash, that dissolves easily and reacts with acids to form salts.
noun Mineral substances, other than ordinary salt, dissolved in soil and natural water.

noun The lowest part of something, on which it stands or rests; a foundation.
noun A place used as the main point of operations for a person, group, or military force.
verb To use something as a starting point or foundation for a decision, argument, or story.
adjective Morally low; without honour or decency.