-ical

(Latin: from -icalis, a suffix that forms adjectives from nouns; of or having to do with; having the nature of; constituting or being; containing or made up of; made by or caused by; like, characteristic of; art or system of thought; chemical terms)

abdominovesical (adjective) (not comparable)
Relating to the abdomen and urinary bladder: Since Kitty was having some pain when urinating, or micturating, she went to her doctor who said that she had abdominovesical irritations which had to be treated.
abiological (adjective) (not comparable)
A reference to the study of inanimate or non living things.
ableptical
Relating to, or a reference to, blindness or a lack of vision.
academical (adjective) (not comparable)
1. Pertaining to higher institution of learning; academic: Such academica studies involve the literary or classical aspects rather than the technical or vocational facets of the subject matters. .
2. Referring to the school or philosophy of Plato: Some of the academical theories of Plato contrast the abstract things, or entities, with objects in the material world.
acarological (adjective) (not comparable)
A reference to the scientific study of mites and ticks: Since she always wanted to learn more about those parasites, like mites and ticks, she finally found some acarological information concerning these animals on the internet.
acarologically (adverb), more acarologically, most acarologically
Relating to how mites and ticks live, thrive, and where they exist: When studying the topics of mites and ticks, Tom's research was acarologically confirmed by viewing these creatures under a microscope and by examining his dog!
acritical (adjective), more acritical, most acritical
In medicine, not marked by trouble or danger.
adenological (adjective), more adenological, most adenological
Of or pertaining to adenology; dealing with the structure of the glands: While Arthur was studying medicine, he had to take a course in the adenological aspects of the human body.
aerobiological (adjective) (not comparable)
A reference to the study of airborne micro-organisms or spores and their distributions: The agrobiological branch of science deals with the occurrence and transportation of viruses, pollen, or pollutants that can be agents of infection.

Aerobiological aspects include the distribution of living organisms by air, either by the exterior, or outdoor air (extramural aerobiology), or by the indoor air (intramural aerobiology).

aeronautic (adjective), more aeronautic, most aeronautic
Relating to aerial navigation; aeronautical: Mark's brother had a job with an aeronautic company designing and building flying machines!
agathocacological, agathokakological (adjective); more agathocacological, most agathocacological; more agathokakological, most agathokakological
Regarding something both good and evil: An agathocacological example could refer to something that is bittersweet.

A agathocacological condition is the coexistence and the relationship between the principles of good and evil.

agonistical (adjective), more agonistical, most agonistical
Referring to competitions that initially took place in Ancient Greece: In his book about Greece, Tom read about the agonistical athletic contests that were very important in Greek life.
agrestical (adjective), more agrestical, most agrestical
Referring to countrified behaviors; rural; rustic: Sam was quite agrestical in his conduct as opposed to being like a city person because he was quite unpolished in his manners and conversation with others.
agrichemical (adjective) (not comparable)
A chemical or chemical product used to improve harvest production in agriculture: An agrochemical substance can pertain to a hormone, a pesticide, a herbicide, a fungicide, or an insecticide.
agrochemical (s) (noun), agrochemicals (pl)
A chemical used to improve the quality of farm products: Hormones, fungicides, or insecticides are agrochemicals that upgrade the production of crops.

An agrochemical is used in agriculture, especially as a biologically active one, such as a weedkiller or a fungicide.