Online dictionary

Science Categories


Agricultural Dictionary Soil Dictionary Dictionary of Biological Control Dictionary of Entomology & Crop Protection Beef Production Dictionary


Astronomy Unbound Dictionary Astronomy Dictionary by Columbus Optical SETI Observatory Dictionary U.F.O. Dictionary


BioProcess International(TM) Dictioanry BioDictionary Dictionary of Marine Biology Dictionary of Genetic Term Dictionary of Evolutionary Biology & Genetics Prehistoric World Dictionary


Botanical Dictionary of Taxonomic Terminology Language of Flowers Dictionary Dictionary od Horticulture Solutions Dictionary of Mushrooms


Electrochemistry Dictionary General Chemistry Dictionary Dictionary of Chemistry Elements

Mathematics & Statistics

Dictionary of Electronic Statistics Bureau of Labor Statistics Dictionary Dictionary of Common Concepts in Statistics Dictionary of Roman Numerals


Dictionary of Fiber Optics Dictionary of Wireless, RF & Microwave Terms Solar Physics Dictionary Dictionary of Liquid Chromatography Gravity & Magnetic Dictionary


PETsMART.COM Dictionary Regulatory Fish Encyclopedia (RFE) Fishery Dictionary Ornithology Dictionary Owls Dictionary Tortoise & Turtle Dictionary Parrot Lover Dictionary

Other Resources

Science Magazine Science Daily Agriculture Online Mutual UFO Network The Biology Project Botany World of Chemistry Physics Ornithology

Welcome to the Free Science Dictionary


Science is an umbrella term for a huge number of fields: from Astronomy to Zoology science and technology are the core factors for the improvements in our modern lives. brings you here a vast array of technical science dictionaries with millions of scientific terms in one of the most complete collections of dictionaries available on the Web. Among the many categories and sub-categories available, you may find here science terminology for:

  • Agriculture
  • Astronomy
  • Biology
  • Botany
  • Chemistry
  • Mathematics
  • Physics
  • Zoology

From the most common of the science terms to the most specialized, you are sure to have on all the scientific vocabulary you might need for reading or writing Science journals and newspapers articles.


Science Dictionary INDEX:

Please select a letter for all terms that start with it:
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  µ  1  2  3  4  5  6  7  8  9  

Term of the day


Science DictionaryAgricultural Dictionary
—Climate of 250 – 500 mm annual rainfall.

Popular Terms

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