Definition

Noun: 1. A byproduct of steelmaking used as fertilizer: "Basic slag" is a material produced during the steelmaking process. It is low in silica but contains high levels of calcium phosphate, making it valuable for improving soil quality and promoting plant growth.

Usage

"Basic slag" is used as a mass noun, typically without a plural form, to refer to the fertilizer material. * The farmer spread basic slag on the field to reduce soil acidity. * Basic slag is an effective source of phosphate for crops.

Advanced Usage

• Agricultural Context: The term is primarily technical and used within agriculture, soil science, and industrial contexts to specify a particular type of phosphate fertilizer derived from steel production.

Variants and Related Words

• Slag (noun): The general term for the stony waste matter separated from metals during the smelting or refining of ore. "Basic slag" is a specific, useful type of slag.
• Fertilizer (noun): A broader category of substances added to soil to supply nutrients essential for plant growth. Basic slag is one kind of fertilizer.

Synonyms

• Phosphate slag
• Thomas slag (historical context, named after the Thomas process)
• Calcium phosphate fertilizer

Different Meanings

The term "basic slag" does not have common idiomatic or phrasal verb uses. Its meaning is specific to the compound noun defined above.

Noun

1. slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer