-ity

(Latin: suffix used to form abstract nouns expressing act, state, quality, property, or condition corresponding to an adjective)

puerility, pueritia
1. The quality or state of being a child; specifically, the status under civil law of a child between infancy and puberty defined as from seven to fourteen years of age in boys and from seven to twelve years of age in girls.
2. The quality of being puerile; (mere) childishness, triviality.
quantity
1. Greatness, amount; an amount or number of something.
2. A large amount or number.
recognizability (s) (noun), recognizabilities (pl)
The quality of being easily aware of something or being known: When learning German for the first time, easy words are taught and used over and over again, producing easy recognizability for the beginners who are learning he language.
sacrosanctity (s) (noun), sacrosanctities (pl)
1. That which is protected or most holy, inviolate, protected: Mike's supervisor emphasized the sacrosanctity of scheduled time off from the job in order to prevent professional burnout.
2. Treated as if holy or immune from criticism or violation: The elderly poet was treated with a sacrosanctity by her fellow poets who praised her for her creative talents.
sagacity
1. Acuteness of mental discernment; aptitude for investigation or discovery; keenness and soundness of judgement in the estimation of persons and conditions, and in the adaptation of means to ends; penetration, shrewdness.
2. Having profound knowledge and understanding, coupled with foresight and good judgment.
3. Etymology: from Middle French sagacité which came from Latin sagacitatem, sagacitas, "quality of being acute", from sagax, sagacis, "of quick perception", related to sagus, "prophetic", and sagire, "to perceive keenly".
salacity
The quality or condition of being salacious; lustfulness, lecherousness, sexual wantonness.
salinity
1. A measure of the total concentration of dissolved salts in sea water usually measured in parts per thousand.
2. The weight ratio between dissolved salts and water in seawater.
3. In chemistry, the amount of dissolved salts in any solution.
sanctanimity (s) (noun), sanctanimities (pl)
A holiness of the mind: Little Mary seemed to live in a world of her own, believing only the good in people, and her parents wondered about this sanctanimity and talked to their reverend at their church about it.
sanctity
1. Holiness of life, saintliness; the rank of a (canonized) saint.
2. The quality of being sacred or hallowed; sacredness, claim to (religious) reverence; inviolability.
3. Something thought to be sacred.
sapidity
1. The quality of being sapid or having taste and flavor.
2. Perceptible to the sense of taste; having flavor.
3. Having a strong pleasant flavor; savory.
4. Pleasing to the mind; engaging.
saponaceous
1. Of the nature of, or resembling, soap; consisting of, or containing, soap; soapy.
2. Having the consistency of soap; slippery.
saprobity
The degree to which the decomposition of organic material is occurring in an aquatic environment.

The saprobity system is based on the observation that in the course of the self-purification process a body of water shows distinct zones of decreasing pollution (or improved water quality); these zones are termed polysaprobic (gross pollution), alpha-mesosaprobic, beta-mesosaprobic, and oligosaprobic; the latter may be divided into alpha- and beta- oligosaprobic.

Each zone is characterized by a particular content of oxygen, organic matter, products of septic decay, and products of mineralization. Biologically, each zone affords optimal conditions for certain species and communities of organisms, the so-called "indicator" organisms.

    The particular saprobity zones may be characterized as follows:

  • Polysaprobic zone, heavy pollution with sewage or other organic materials, mass development of bacteria that are involved in decomposition processes, a high rate of oxygen consumption, and a high production of ammonia and hydrogen sulfide.
  • Alpha-mesosaprobic zone, vigorous oxidation processes, increased dissolved oxygen though oxygen consumption is still high, no hydrogen sulfide production, oxidation of ammonia starts.
  • Beta-mesosaprobic zone, much dissolved oxygen, low oxygen consumption, mineralization of organic materials, and large amounts of the end-products of mineralization; for example, nitrates.
  • Oligosaprobic zone, all mineralization processes have been completed, the dissolved oxygen content is high and oxygen consumption nearly zero; the beta-oligosaprobic level is characterized by rather moderate variety of species and low bioactivity, while the alpha-oligosaprobic level is characterized by a comparatively large variety of species and high bioactivity.
seismicity
1. The intensity, frequency, and distribution of earthquakes in a specific area.
2. The geographic and historical distribution of earthquakes.
3. The likelihood of an area being subject to natural earthquakes.
senility (s) (noun), senilities (pl)
Elderliness or the mental and physical infirmity resulting from this: Jim's aunt seemed to be suffering from senility since she was physically frail and continually worried about falling and breaking an arm or a leg.

Forgetting names and faces or misplacing keys are normal occurrences for any age and when people are young, they think nothing of such situations; however, as they get older, they're tempted to worry that such actions are signs of senility.

seniority (s) (noun), seniorities (pl)
1. The state or quality of being higher in a position; priority by reason of birth, a superior age: Because the prince had seniority over his younger brother, the duke, the prince assumed responsibility for drafting the new laws.
2. Priority or precedence in office or service; especially military: Susan's seniority at the company allowed her to have three weeks annual vacation.
3. Superiority in standing to another of equal rank by reason of earlier entrance into the service, or an earlier date of appointment: Mr. Johnson, the elderly politician, had seniority over the more recently elected representatives.