also: ちれきせい
地瀝青 is an old term for asphalt used in road paving.
Rare technical kanji spelling; the reading じれきせい is more common than ちれきせい.
Alternate reading; less common than じれきせい.
Compound of 地 (earth) and 瀝青 (bitumen/pitch), literally 'earth pitch'. The exact historical derivation is uncertain; it is a technical term likely coined in the modern era.