-ous, -ious, -eous

(Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.)

Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

abdominous
Having a paunch or big belly; overly corpulent [fat] in a large abdominal area.
abiogenous (adjective) (not comparable)
Pertaining to the coming into existence without springing from previous living beings: There are those who claim that abiogenous creatures were produced spontaneously without any previous living ancestors.
ablepharous
A congenital reduction of the eyelids (partial or complete).
abstemious (adjective), more abstemious, most abstemious
1. Relating to being moderate or not excessive when eating and drinking; being sober, temperate; and not being too self-indulgent: Ted's family ate abstemious meals in order to cut down on their overweight conditions.

Abstemious people restrict themselves to the bare necessities of life and prefer an austere, simple, or unassuming lifestyle.

2. Etymology: abs-, ab-, "from, away from" + temetum, "intoxicating drink, mead, wine".
Moderate and sparing in the use of food and drink; being temperate.
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acanthaceous
Bearing prickles or spines; having spinous processes.
acanthocarpous
acanthocephalous
Pertaining to or caused by an acanthocephalan worm.
acanthocladous
Any plant having thorny branches or relating to such a plant.
acanthophorous
Bearing, or having, spines.
acanthopodous
In botany, relating to or designating a spiny, prickly plant part.
acanthopterous
acanthostegous
In invertebrate zoology, overlaid with two series of spines.
acanthous
acarocolous (adjective), more acarocolous, most acarocolous

A reference to mites and ticks that infest various areas in nature.

  • There are several acarocolous species that are too small to be seen without the use of some form of magnifying instrument and they abound in almost every habitat where they scavenge on waste materials, prey on other tiny invertebrates, or live as parasites on many larger species of life.
  • Some acarocolous mites are harmless as they exist in skin follicles, feathers, or fur; while others cause diseases or allergies.
  • The acarocolous ticks are blood-suckers and spread disease-causing microbes in animals.
—Source: Smithsonian Natural History, page 262.
acarophilous (adjective), more acarophilous, most acarophilous
A reference to living in union with mites: The acarophilous relationships involve the very small insects that live in foods, on plants, or on animals; including humans.