71 results found

Search Results for: ray

X-ray

Definition noun, plural: X-rays (1) A ray characterized generally by its wavelength ranging from 0.01 to 10 nm, and... Read More

Reflected ray

Reflected ray A ray of light or other form of radiant energy which is thrown back from a nonpermeable or nonabsorbing... Read More

Ray

ray (Science: botany) A zygomorphic flower in the family asteraceae, a radial band of cells traversing the conducting... Read More

Photolysis

Photolysis Definition We define photolysis as a chemical process in which chemical compounds or molecules are split into... Read More

Asteraceae

'Asteraceae'', composite family. A single family enclosed in order Asterales in subclass Asteridae. The other name -... Read More

Actinopterygian

Definition noun, plural: Actinopterygians Any of a group of Osteichthyes characterized by possessing lepidotrichia (i.e. fin... Read More

Commensalism

Commensalism Definition What is commensalism? Literally, commensalism is a Latin word that means ‘to eat at the same... Read More

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

Sarcopterygian

Definition noun, plural: Actinopterygians Any of a group of Osteichthyes characterized primarily by their lobed... Read More

Hydrophobic

Hydrophobic Definition The fear of mixing or reacting with water under a given set of reaction parameters is often referred... Read More

Taxonomy

Taxonomy Definition The term "taxonomy" was developed from two Greek words, "taxis," meaning arrangement, and "nomia,"... Read More

Vascular Ray

A sheet of vascular tissue separating the vascular... Read More

Wavelength

wavelength (Science: radiobiology) The length of a single cycle of a wave, usually measured from crest-to-crest. For... Read More

Radiate

radiate 1. To emit rays; to be radiant; to shine. Virtues shine more clear In them kings, and radiant like the sun at noon.... Read More

Metaphase

Metaphase Definition Metaphase is the third phase of mitosis after prophase and before anaphase. Mitosis is the process by... Read More

Parenchyma

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More

Sting

sting 1. (Science: zoology) Any sharp organ of offense and defense, especially when connected with a poison gland, and... Read More

Electromagnetic spectrum

Definition noun The spectrum of all types of electromagnetic radiation Supplement The electromagnetic spectrum includes... Read More

Species

Every living organism is unique when you observe its morphological, anatomical, molecular, genetic, biochemical, chemical,... Read More

Plane

Plane 1. To make smooth; to level; to pare off the inequalities of the surface of, as of a board or other piece of wood, by... Read More

Radiata

radiata (Science: zoology) An extensive artificial group of invertebrates, having all the parts arranged radially around the... Read More

Albumin

Albumin Definition What is albumin? Is albumin a protein? In biology, albumin is a protein that is responsible for the... Read More

Teleroentgenography

teleroentgenography --> teleradiography radiography with the x-ray tube positioned about 2 m from the film thereby... Read More

Leaves

Leaves are highly efficient solar energy converters. They capture light energy and through the process of photosynthesis.... Read More

Tapetum lucidum

Definition noun, plural: tapeta lucida A layer of tissue in the choroid or in the retinal pigment epithelium of the eye of... Read More

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

Microwave

Definition noun A form of electromagnetic radiation that is generally characterized by wavelengths ranging from one meter to... Read More

Osteichthyes

Definition noun A taxonomic superclass of a diverse group of fish that have skeletons composed primarily of bone... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Radiodensity

Definition noun The state or quality of being radiodense, i.e. dense to X-rays or other radiation Supplement In radiography,... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Phloem parenchyma

Definition noun The parenchyma cells in between the sieve tubes of the phloem, and functions primarily for food... Read More

Myoglobin

myoglobin (Science: physiology) protein (17.5 kD) found in red skeletal muscle. It was the first protein for which the... Read More

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Deoxyribonucleic acid

Deoxyribonucleic Acid (DNA) Definition A nucleic acid refers to any of the group of complex compounds made up of linear... Read More

Harris lines

Definition noun Lines near the end of a juvenile long bone (e.g. tibia), detected through radiographs (e.g. by X-ray), and... Read More

Base-pairing rule

Base-pairing Rules Definition The base-pairing rules are rules that apply during the pairing between one purine and one... Read More

Batutut

The Batutut or Ujit is a proposed hominid Cryptid thought to inhabit the Vu Quang nature reserve and other wilderness areas... Read More

Nodal points

nodal point One of two point's in a compound optical system so related that a ray directed toward the first point will... Read More