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Ash Wednesday

(Encyclopedia)Ash Wednesday, in the Western Church, the first day of Lent, being the seventh Wednesday before Easter. On this day ashes are placed on the foreheads of the faithful to remind them of death, of the so...

Wednesday

(Encyclopedia)Wednesday: see week.

prickly ash

(Encyclopedia)prickly ash, name for two deciduous shrubs or small trees (Zanthoxylum americanum and Z. clava-herculis) of the family Rutaceae (rue family). They are native to E North America and have prickly twigs ...

ash, in chemistry

(Encyclopedia)ash, in chemistry, solid residue of combustion. The chemical composition of an ash depends on that of the substance burned. Wood ash contains metal carbonates (e.g., potassium carbonate) and oxides fo...

pearl ash

(Encyclopedia)pearl ash: see potassium carbonate. ...

soda ash

(Encyclopedia)soda ash: see sodium carbonate.

ash, in botany

(Encyclopedia)ash, in botany, any plant of the genus Fraxinus of the family Oleaceae (olive family), trees and shrubs mainly of north temperate regions. The ashes are characterized by small clusters of greenish flo...

Madinat ash Shab

(Encyclopedia)Madinat ash Shab mədēˈnət ăsh shăb [key], town, SW Yemen, just N of Aden. Formerly called al-Ittihad, it was built in the 1960s as the federal capital of the Federation of South Arabia. From 196...

mountain ash, in botany

(Encyclopedia)mountain ash, name for any species of the genus Sorbus of the family Rosaceae (rose family), hardy ornamental trees and shrubs native to the Northern Hemisphere, not related to the true ashes. They ar...

Mountain Ash, town, Wales

(Encyclopedia)Mountain Ash, Welsh Aberpennar, town (1981 pop. 26,231), Rhondda Cynon Taff, S Wales. A former mining community, it depended upon the great coal mines nearby, which were developed in the 19th cent. A ...