1 Likewise, at two years of age a cat has reached the same maturity as a person of 25 years, so the second year of a cat's life is equivalent to 10 years (25 minus 15) of a person's. 2  Thereafter, each calendar year a cat ages the equivalent of 4 human years.
countable noun. 1  The focal point of something is the thing that people concentrate on or pay most attention to. 2  the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection. 3  a central point of attention or interest.
Define reference point. reference point synonyms, reference point pronunciation, reference point translation, English dictionary definition of reference point. A prominent, easily located point in the terrain. Noun 1. reference point - an indicator that orients you generally; it is used as a reference for... Reference point - definition of reference point by The Free Dictionary https://www.thefreedictionary.com/reference+point