(Greek: prefix; no, absence of, without, lack of; not)
These prefixes are normally used with elements of Greek origin, a- is used before consonants and an- is used before vowels.
It affects the meanings of hundreds of words.
There are too many words that use these prefix elements to list all of them on this site; however, there are significant examples listed in this and the other units where they exist.
2. The absence of the tongue that exists before or at birth: It was difficult for the calf to feed because of its congenital condition of aglossia.
3. The loss of the ability to speak; mutism: The medieval court jester was unable to talk because he suffered from aglossia.
2. Loss of the ability to recognize people or objects and their meanings: A tragic consequence of the industrial accident was the onset of agnosia making it impossible for some of the workers to continue working because they couldn't remember how to perform their jobs anymore.
3. In medicine, losses of comprehensions at the levels of central nervous systems of any of the senses: The sensory spheres of the agnosias may be intact, but Linda is unable to assimilate the meanings of whatever the senses indicate.
2. A person who believes that the existence of God is unknown, but does not deny the possibility that God exists: Sherman, who was an agnostic, was not convinced that there is a God; however, he also was open to considering any evidence that would prove that God is a reality.
3. Someone who thinks it is impossible to know whether there is a God, future life, or anything beyond the material phenomena we are experiencing and who is unwilling to accept supernatural revelation: One dictionary defines an agnostic as being someone who is not, as is often held, someone who doesn’t know whether there is a God, but a person who believes it is impossible to know or to prove anything about the existence of God.
An agnostic is someone who says he knows nothing about God, and when you agree with him, he becomes angry.
An agnostic is someone who has no invisible means of support.
Agrammaphasias are usually caused by a cerebral disease that is characterized by an inability to construct a grammatical or intelligible sentence while still having the ability to speak single words.
When a person with agraphesthesia can't feel "writing" on the skin, it is believed that it is usually caused by a central nervous system lesion. This problem is typically tested by an examiner who uses an instrument (neither an ink pen nor a pencil) that forms a number in the palm of one of the hands, which the patient cannot see, and then asking that person to say what the number is.
When blindfolded, Robin experienced total agraphesthesia, and could not recognize any of the simple designs the doctor drew on the palm of his hand.
2. Being incapable of writing properly which can be a result of aphasia and alexia that is caused by lesions in various portions of the cerebrum; especially, those in or near the angular gyrus of the brain or that part of the brain that is involved in the processing of auditory and visual input and in the comprehension of language: After many medical examinations, the doctors determined that the agraphia experienced by Bryant was neurologically different from that which might have resulted from an injured arm.
Helen Keller (1880-1968) was a United States lecturer and writer who was blind and deaf from the age of 19 months as a result of a severe fever. Anne Sullivan taught her to read, to write, and to speak and since she was not hampered by agraphognosia, Helen even graduated from college with honors and went on to become an activist and lecturer in support of blind and deaf people.
There are many people who are suffering from various forms of ahypnia.