Science / Geology / Diatom: A one celled plant that lives in the shallow waters of lakes, streams or oceans. Many of these secrete a shell or internal parts composed of silica. Diatoms can occur in very large numbers and can make significant contributions to sea-floor or lake sediment.
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Spring Diatom Increase

Science / Marine Biology / Spring Diatom Increase: The major rapid population increase of diatoms, occurring in the spring in temperate-boreal latitudes MORE


Science / Geology / Diatomite: A light colored, fine-grained siliceous sedimentary rock that forms from a sediment rich in diatom remains. MORE

Diatomic Molecule

Science / Chemistry / Diatomic Molecule: A molecule that contains only two atoms. All of the noninert gases occur as diatomic molecules; e. G. Hydrogen, oxygen, nitrogen, fluorine, and chlorine are H2, O2, N2, F2, and Cl2, respectively. MORE

Diatomaceous Earth

Science / Biology / Diatomaceous Earth: Fossilized deposits of diatoms; used for abrasives, polishes and as a filtering agent. MORE

Diatom Ooze

Science / Geology / Diatom Ooze: A seafloor sediment that consists of at least 30% diatom remains. MORE