Because patients needing medically necessary lenses often have irregular corneas, the process involved with fitting these lenses can be a difficult, expensive, time-consuming experience, that requires patience from and perseverence from both the practitioner and the patient.
Best Answer: An animal. Noun - name for an animal, person, place or thing. It refers to an inanimate object or a non-human one. Person refers only to humans. dog is a noun. a noun is a person, place, thing, or idea.
Plastic letters spell the word dog. The definition of a word is a letter or group of letters that has meaning when spoken or written. An example of a word is dog. The definition of a word is a letter or group of letters that has meaning when spoken or written. 1  An example of a word is dog. 2  An example of words are the seventeen sets of letters that are written to form this sentence.