Term: echo: the repetition of a sound resulting from reflection of the sound waves
Candidate hypernym: reflection: the ability to reflect beams or rays → 1
Candidate hypernym: rheumatoid arthritis: a chronic autoimmune disease with inflammation of the joints and marked deformities; something (possibly a virus) triggers an attack on the synovium by the immune system, which releases cytokines that stimulate an inflammatory reaction that can lead to the destruction of all components of the joint → 0
Candidate hypernym: inflation: (cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang → 0
Candidate hypernym: sial: the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum → 0
Candidate hypernym: plexus: a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels → 0
Candidate hypernym: picometer: a metric unit of length equal to one trillionth of a meter → 0
Candidate hypernym: alveolitis: inflammation in the socket of a tooth; sometimes occurs after a tooth is extracted and a blood clot fails to form → 0
Candidate hypernym: animalism: preoccupation with satisfaction of physical drives and appetites → 0
Candidate hypernym: ostinato: a musical phrase repeated over and over during a composition → 0
Candidate hypernym: ace of spades: the ace in the spade suit; sometimes taken as a portent of death → 0
Candidate hypernym: common law: a system of jurisprudence based on judicial precedents rather than statutory laws → 0