In zoology, relating to an organism having a radiately arranged genital organ: In her zoology book, Janet came across a photo of a creature possessing an actinogonidial body part with genitalia positioned in a ray-like pattern.
actinogram (s) (noun)
, actinograms (pl)
A report or entry of the chemical activity of light made by means of the actinograph; radiograph: When heat comes from the sun, an actinometer records the activity and the information is collected in an actinogram.
actinograph (s) (noun)
, actinographs (pl)
An instrument for recording the variations in the power of the solar rays: The actinograph
was invented by Sir J. Herschel in 1838.
An actinograph is one of the various devices used for recording the actinic power of light and for determining the correct time of exposure for photographic plates.
The seldom used terms "radiograph" and "radiography" mean that images are produced on film or on another sensitive surface by radiation, such as X-rays or gamma rays passing through an object.
actinohematin (s) (noun) (no pl)
A red respiratory pigment found in certain forms of sea anemones: When Mary was studying zoology, she found an article about actinohenmatin, which was the crimson color of the respiratory organ of a marine polyp which resembled a flower.
Concerning the form of rays: rayed; The shape of the starfish or sea anemone is typically actinoid.
actinolite (s) (noun)
, actinolites (pl)
A bright green variety of amphibole occurring usually in fibrous or columnar masses: "Amphibole" refers to a hydrous silicate mineral actinolite that contains varying amounts of aluminum, calcium, iron, magnesium, and sodium
, more actinolitic, most actinolitic
Of the nature of, or containing, actinolite which is the bright green variety of amphibole occurring usually in fibrous or columnar masse: "Amphibole" is any of a complex group of actinolitic minerals containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende, tremolite, asbestos, etc., and occurring as important constituents of many rocks.
actinology (s) (noun) (no pl)
The science of photochemistry or the science of the chemical effects of light in the violet and ultraviolet wavelengths: Joe was very interested in the actinology
of the South Atlantic and decided to learn more about this area of science.
The study of radiant energy is investigated in the field of actinolgy.
actinolyte (s) (noun)
, actinolytes (pl)
1. A device which generates ultraviolet rays: The actinolye
was an obsolete instrument used in actinotherapy.
The modern day equivalent would be a phototherapy device or a UV light emitter.
2. Any substance which undergoes a rather marked change when exposed to light: Jack had the assignment to find out if an actinolyte, or chemical compound, could be analyzed into its components or parts by light.
actinomere (s) (noun)
, actinomeres (pl)
One of the radial segments composing the body of one of the Coelenterata; antimere: An actinomere is a radially symmetrical devision as seen in a sea-anemone or in a jellyfish.
actinometer (s) (noun)
, actinometers (pl)
An instrument for measuring the intensity and penetrating power of actinic rays: An actinometer
is a device for assessing light energy, especially solar and terrestrial radiation.
An actinometer is an implement used for determining the intensity of radiation by measuring the fluorescence produced by it.
, more actinometric, most actinometric
1. Pertaining to actinometry: An actinometric measurement can judge the intensity of the solar rays, either by (a) heating or by (b) actinic means.
2. A reference to any of several radiometric instruments: An actinometric device can be a pyrheliometer, which is used chiefly for meteorological measurements of terrestrial and solar radiation.
actinometry (s) (noun)
, actinometries (pl)
The assessment of the intensity of electromagnetic radiation: The actinometry
shows the intensity of actinic rays and the degree of penetration of such rays.
Actinometry indicates the amount of light energy in photochemistry and the extent of solar energy.
, more actinomorphic, most actinomorphic
In botany, a reference to radial symmetry: The tulip and the rose are two examples of actinomorphic flowers in that the longitudinal halves are proportional to each other, or balanced with each other.
, more actinomorphous, most actinomorphous
In botany, referring to the petals arrayed in a radially balanced form: The buttercup flowers have actinomorphous or ray-shaped floral parts and are bright yellow.