ETYM Latin concretus, p. p. of concrescere to grow together; con- + crescere to grow; cf. French concret. Related to Crescent.
1. Capable of being perceived by the senses; not abstract or imaginary.
2. Formed by the coalescence of particles.

A strong hard building material composed of sand and gravel and cement and water.
Building material composed of cement, stone, sand, and water. It has been used since Egyptian and Roman times. Since the late 19th century, it has been increasingly employed as an economical alternative to materials such as brick and wood, and has been combined with steel to increase its tension capacity.
Reinforced concrete and prestressed concrete are strengthened by combining concrete with another material, such as steel rods or glass fibers. The addition of carbon fibers to concrete increases its conductivity. The electrical resistance of the concrete changes with increased stress or fracture, so this “smart concrete” can be used as an early indicator of structural damage.

Town in Washington (USA); zip code 98237.

1. To cover with concrete.
2. To form into a solid mass; coalesce.
3. Solidify; coalesce.