Term: focal ratio: the ratio of the focal length to the diameter of a (camera) lens system
Candidate hypernym: ratio: the relative magnitudes of two quantities (usually expressed as a quotient) → 1
Candidate hypernym: mycoplasmataceae: pleomorphic Gram-negative nonmotile microorganism similar to both viruses and bacteria; parasitic in mammals → 0
Candidate hypernym: lotion: any of various cosmetic preparations that are applied to the skin → 0
Candidate hypernym: dado: a rectangular groove cut into a board so that another piece can fit into it → 0
Candidate hypernym: skateboard: a board with wheels that is ridden in a standing or crouching position and propelled by foot → 0
Candidate hypernym: agency: the state of being in action or exerting power → 0
Candidate hypernym: maximum: the largest possible quantity → 0
Candidate hypernym: comfortableness: a feeling of being at ease in a relationship → 0
Candidate hypernym: spiritual being: an incorporeal being believed to have powers to affect the course of human events → 0
Candidate hypernym: thrombocytopenia: a blood disease characterized by an abnormally small number of platelets in the blood → 0
Candidate hypernym: hornbeam: any of several trees or shrubs of the genus Carpinus → 0