What does phosphatide mean?
A phosphatide is a phosphorus-containing fatty substance, most often referring to a phospholipid found in animal and plant cells. Many phosphatides are components of cell membranes, where their water-attracting and water-repelling regions help form a flexible barrier. Because this molecular arrangement controls what enters and leaves a cell, phosphatides are important in membrane biology, cellular communication, and the transport of substances. The word is specialized and appears less frequently than the broader, more familiar term “phospholipid.” In biochemistry, it is especially associated with naturally occurring membrane lipids, although historical scientific usage can be somewhat broader. For a general audience, “phospholipid” often communicates the same basic idea more directly, while “phosphatide” may be preferred in technical discussions or in descriptions of a particular class of phosphorus-containing lipids.
nounA phosphatide is a phosphorus-containing lipid, especially a phospholipid occurring naturally in biological membranes. The term is chiefly used in biochemistry and is less common in general scientific usage than “phospholipid.”
- Any phosphorus-containing lipid, especially a naturally occurring phospholipid.
"The cell membrane contains phosphatides arranged as a double layer that separates the cell’s interior from its surroundings."
"Different phosphatides contribute differently to the structure and function of cell membranes."
"The researchers measured the amount of phosphatide in the extracted tissue."
The plural is used when referring to several lipids or to a class of compounds.
"These phosphatides play essential roles in the structure of cell membranes."
Phosphatides form the phosphorus-bearing molecular layer that helps keep living cells intact.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does phosphatide come from?
The word was formed in the 19th century from elements associated with phosphate and the chemical suffix “-ide.” It belongs to the same scientific vocabulary that developed as chemists identified phosphorus-containing constituents of fats and other biological substances. Later, the related derivative “phosphatidyl” became common in names such as phosphatidylcholine, a phospholipid containing a phosphate group.
Related word forms
How phosphatide is actually used
A specialized biochemical term, encountered mainly in academic and historical scientific writing. In modern usage, “phospholipid” is usually clearer and more common.