Term: achromatic lens: a compound lens system that forms an image free from chromatic aberration
Candidate hypernym: compound lens: a lens system consisting of two or more lenses on the same axis → 1
Candidate hypernym: perpendicular: an extremely steep face → 0
Candidate hypernym: break: the occurrence of breaking → 0
Candidate hypernym: congenital heart defect: a birth defect involving the heart → 0
Candidate hypernym: viverricula: a genus of Viverridae → 0
Candidate hypernym: nitrogen trichloride: a yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flour → 0
Candidate hypernym: yukon white birch: Alaskan birch with white to pale brown bark → 0
Candidate hypernym: metamathematics: the logical analysis of mathematical reasoning → 0
Candidate hypernym: sink: plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe → 0
Candidate hypernym: net melon: the fruit of a variety of muskmelon vine; a melon with netlike markings and deep green flesh → 0
Candidate hypernym: palinurus: type genus of the family Palinuridae → 0