-al; -ial, -eal

(Latin: suffix; pertaining to, like, of the kind of, relating to, characterized by, belonging to; action of, process of)

spinal
1. Relating to the spinal column.
2. Relating to a spine or spinous process.
Characterized by the functioning of the spinal cord independently of the brain, as from an accident, disease, or, in the case of animals, experimental transection; such as, in a spinal animal or preparation.
suicidal
thermal
1. Relating to or involving heat or heat transfer.
2. A localized air current that rises aloft when the lower atmosphere is heated enough to produce an instability over a certain area.
3. A rising current of relatively warm air, used by gliders and birds to gain height.
4. In meteorology, a localized air current that rises aloft when the lower atmosphere is heated by the earth’s surface enough to produce an absolute instability over a certain area; a common source of low-level clear-air turbulence.
5. Of, pertaining to, or of the nature of hot springs; of a spring, etc., (naturally) hot or warm; also, having hot springs.
6. Of or pertaining to heat; determined, measured, caused, or operated by heat.
verbal (adjective)
1. Dealing in or with words, especially with mere words in contrast to things or realities: "The new job requires someone with strong verbal skills."
2. Using many words; talkative, verbose; ready to use words: "Sometimes she is just too verbal and never seems to know when to stop talking."
3. Interested in, attending to, the mere words of a literary composition: "His composition turned out to be full of clever verbal expressions."
4. Consisting or composed of words; also, of or pertaining to, manifested in, words: "They had a verbal agreement to start the project."
5. In diplomacy, a verbal note is an unsigned note or memorandum sent as a mere reminder of some matter not of immediate importance.
6. Verbal diarrhea, a tendency to talk too much; extreme verbosity.
7. Concerned with, affecting or involving, words only, without touching things or realities.
8. Finding expression in words only, without being manifested in action.
9. A reference to something that expressed or conveyed by speech instead of writing; stated or delivered by word of mouth; oral.
visual
1. Anything which can be seen, or that is intended to be seen, by the eyes, a visual presentation; especially, as opposed to being registered by one of the other senses or by a machine.
2. Relating to the sense of sight; a visual organ; visual receptors on the retina.
3. Able to be perceived as a picture in the mind rather than as an abstract idea: "She was known for having a visual memory."
4. Any direction-finding done by sight only and without the use of scientific instruments or equipment.
5. A photograph, picture, chart, graph or other kinds of presentations that display information or promotional material in a way that appeals to the sense of sight.
vital
1. Relating to, or characteristic of life; such as, a vital process.
2. Essential to life; necessary to maintain life; such as, breathing, eating, and drinking are just a few of the things which are vital functions of life.