acellular |
composed of only one cell; unicellular (used esp. in reference to protozoans and ciliates). [1/2 definitions] |
actin |
any of a group of contractile proteins, including proteins involved in muscle contraction, cell motility, and maintenance of cellular shape. |
alveolus |
a small cavity or pit, such as one of the terminal air sacs of the lungs or one cell of a honeycomb. [1/2 definitions] |
amitosis |
direct cell division in which the nucleus divides without the formation of chromosomes. (Cf. mitosis.) |
amoebocyte |
a cell that resembles or moves like an amoeba, such as a leukocyte. |
apoptosis |
genetically regulated cell death that occurs as a normal part of growth and development, and which also occurs when a cell becomes damaged. |
app |
a computer application designed for mobile operating systems and devices, such as cell phones. [1/2 definitions] |
arachidonic acid |
an unsaturated fatty acid that is an important component of the cell membrane and is considered an essential nutrient in the diet of most mammals, including humans. |
axon |
the part of a nerve cell that conducts impulses away from the cell body. |
basidiomycete |
any of the fungi, such as mushrooms, puffballs, and smuts, that bear spores on a club-shaped cell. |
basophil |
a tissue, substance, or cell, esp. a white blood cell, that readily takes on basic dyes. |
B cell |
a type of white blood cell, produced in the bone marrow, that makes antibodies that fight off disease. |
bilayer |
biological material composed of two layers of molecules, such as lipids in a cell membrane. |
-blast |
bud, embryo, cell layer, or other generative unit. |
brain cell |
a cell in the brain, esp. a neuron. |
bull pen |
(informal) a place, usu. a cell, where prisoners are kept temporarily. [1/3 definitions] |
cell line |
a cell culture produced from a single cell. |
cellmate |
a person that one shares a prison or jail cell with. |
cell membrane |
the semipermeable membrane that encloses the contents of a cell; plasma membrane. |
cell phone |
a mobile telephone that operates using radio signals and therefore requires no wires. A cell phone is part of a system composed of many low-power radio transmitters located in "cells" across a region and will receive a radio signal from whichever transmitter in the system is closest; cellular phone. |
cellular phone |
a mobile telephone that operates using radio signals and therefore requires no wires. A cellular phone is part of a system composed of many low-power radio transmitters located in "cells" across a region and will receive a radio signal from whichever transmitter in the system is closest; cell phone; mobile phone. |