pheno-, phaeno-, phen-, phenomeno-, -phen +

1. Study of the temporal aspects of recurrent natural phenomena, and their relation to weather and climate.
2. The scientific study of cyclical biological events; such as, flowering, breeding, and migration, in relation to climatic conditions.
3. The recording and study of periodic biotic events, as flowering, breeding, migrations, etc., in relation to climatic and other factors.

Phenological records of the dates on which seasonal phenomena occur and which provide important information on how climate change affects ecosystems over time.

Slang: A phenomenon, especially a remarkable or outstanding person.

All of the phenotypic characteristics of an organism.

1. Things that exist and can be seen, felt, tasted, etc.; especially, things which are unusual or interesting: "Do you believe in the paranormal and other psychic phenomena?"
2. Any states or processes known through the senses rather than by intuition or reasoning; such as, "remarkable developments".
3. In medicine: Symptoms; occurrences of any sort, whether ordinary or extraordinary, in relation to a disease.
4. Unusual facts or occurrences.

Phenomenon is the singular form even in English, while phenomena is the plural form. Phenomena should never be used with a singular verb.

1. The doctrine that phenomena are the only objects of knowledge or the only form of reality.
2. The view that all things, including human beings, consist simply of the aggregate of their observable, sensory qualities.
3. The doctrine, set forth by David Hume and his successors, that percepts and concepts constitute the sole objects of knowledge, with the objects of perception and the nature of the mind itself remaining unknowable.

To a phenomenal degree: "His reaction was phenomenally fast."

A phenomenological philosopher.

1. A philosophy or method of inquiry based on the premise that reality consists of objects and events as they are perceived or understood in human consciousness and not of anything independent of human consciousness.
2. The way in which one perceives and interprets events and one's relationship to them in contrast both to one's objective responses to stimuli and to any inferred unconscious motivation for one's behavior; also, a psychology based on the theory that phenomenology determines behavior.
3. A philosophical doctrine proposed by Edmund Husserl based on the study of human experience in which considerations of objective reality are not taken into account.

1. An appearance; anything visible; whatever, in matter or spirit, is apparent to, or is apprehended by, observation; such as, the phenomenon of heat, light, or electricity; phenomenon of imagination or memory.
2. That which strikes one as strange, unusual, or unaccountable; such as, an extraordinary or very remarkable person, thing, or occurrence; as, a musical phenomenon.

Phenomenon is the singular form in Latin and in English. A singular verb should be used.

The quantitative measurement of plant growth, mass, and leaf area.

A group of organisms placed together by numerical taxonomy.

1. The sum total of observable structural and functional properties of an organism.
2. The physical appearance of an organism as distinguished from its genetic makeup.

The phenotype of an organism depends on which genes are dominant and on the interaction between the genes and the environment.

Relating to, or characteristic of a phenotype or an individual organism.

A sensation of seeing light caused by pressure or electrical stimulation of the eye.

A phosphene is an entoptic phenomenon (visual effect whose source is within the eye) characterized by the sensation of light from mechanical, electrical, or magnetic stimulation of the eye's retina, or from random firing of cells in the visual system, rather than from light.

Sensations of light caused by excitations of the retina by mechanical or electrical means rather than by light, as when the eyeballs are pressed through closed lids.

The most common phosphenes are pressure phosphenes, caused by rubbing the closed eyes.