Academic Press Dictionary of Science and Technology
Online version of the print volume published by Harcourt. Over 130,000 terms. Search for specific terms or browse by field Acoustics Glossary
List of terms related to acoustics and acoustic materials, from E-A-R Specialty Composites.
AECMA Glossary of Common Abbreviations
Extensive list of abbreviations and acronyms from The European Association of Aerospace Industries. Aramid Glossary of Terms
Brief list of terms related to aramid fibers. Includes definitions of material properties relevant to fibers. Boatbuilding & Boating Terms
This list mainly contains terms used to describe boats and boat components. It might be useful if you're building a composite boat. Bolt Science
Nice glossary of terms related to nuts and bolts. Other bolted joint information on the site is worth browsing. Cement and Concrete Terms
Most common, misused, and abused terms in the concrete industry. From MOXIE International. Clay Bodies
Terms related to clay, a material sometimes used in tooling. Three part glossary with no index. From Chavant. Concrete Reinforcement Glossary
Terms related to concrete, reinforcements (including fibers), and the construction industry. From Nycon. Engineering Design Terms
A short list of terms mainly related to metal machining. The rest of the site is worth exploring, with tables covering such topics as section properties and beam analysis. Fundamental Terminology of Structural Behavior
A very nice list of strength of materials and mechanics terms. Genium's Safety and Health Glossary
Very large list of safety terms. You can search for a specific term, or browse a list of all terms. Free registration required. Jane's Defence Glossary
Database of over 20,000 acronyms and abbreviations related to the defense industry. Search by acronym or term, or browse alphabetically. Materials Attributes Glossary
Brief but detailed list of terms related to material properties (Poisson's ratio, modulus, etc.). Units and equations given. Nice resource. Metal Terminology Dictionary
A very large glossary of terms related to metals. Covers both materials and processing. From Metalmart. Identical to Metallurgy Dictionary. MSDS Terms and Abbreviations
Long list of terms that you might see on an MSDS. Also good as a general safety glossary. From MSDS-SEARCH. Multilingual Technical Dictionary
Extensive table of textile technical terms in English, German, French, Spanish and Italian. Very useful for translating. A search option is also available. NASA Thesaurus
This was a nice site, but the thesaurus is now only available in PDF format, and cross-references are no longer hyperlinked. Someone made a poor decision in changing this site. Nonwoven Terms
Long list of terms related to nonwoven fabrics. Covers materials and manufacturing processes. Search by word or definition, or browse by first letter. Nuts and Bolts
An extensive glossary of terms related to threaded fasteners. Includes generic terms and trade names of some specific fasteners. Process Attributes Glossary
Definitions of material processing methods, classes of processing, and constants and properties related to different processes. Nice resource. SAGE Glossary
List of terms related to solvents and toxicity from the Solvent Alternatives Guide (SAGE). Strain Gage Glossary
Long list of terms related to mechanical testing, with an emphasis on strain gaging and instrumentation. From the Measurements Group. Textile Dictionary
List of textile terms, primarily for apparel fabrics and materials. From Elite Textiles. Thread Terminology
A brief but good description of terms related to bolts (thread, pitch, shank, etc.). Good illustration. From American Fastener Technologies.
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