Dictionary.com
Thesaurus.com

molecular biology

American  

noun

  1. the branch of biology that deals with the nature of biological phenomena at the molecular level through the study of DNA and RNA, proteins, and other macromolecules involved in genetic information and cell function, characteristically making use of advanced tools and techniques of separation, manipulation, imaging, and analysis.


molecular biology British  

noun

  1. the study of biological phenomena at the molecular level

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

molecular biology Scientific  
/ mə-lĕkyə-lər /
  1. The branch of biology that deals with the formation, structure, and function of macromolecules essential to life, such as nucleic acids and proteins, including their roles in cell replication and the transmission of genetic information.


molecular biology Cultural  
  1. The branch of science devoted to studies of the structure, function, and reactions of DNA, RNA, proteins, and other molecules involved in the life processes.


Etymology

Origin of molecular biology

First recorded in 1935–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In one of the greatest breakthroughs of the 20th Century, he identified the double-helix structure of DNA in 1953 alongside British scientist Francis Crick, setting the stage for rapid advances in molecular biology.

From BBC

That question led Aristeidis Telonis, Ph.D., a research assistant professor of biochemistry and molecular biology at the Miller School, to investigate whether environmental and social conditions leave detectable biological signals in tumors.

From Science Daily

At a time when applying molecular biology to psychiatric questions was still considered bold, Dr. Nestler and colleague Dr. Ron Duman recognized that the field was ready for a new scientific direction.

From Science Daily

Watson, meanwhile, had graduated and moved on to Indiana University, where he joined a cluster of scientists known as the “phage group,” whose research with viruses infecting bacteria helped launch the field of molecular biology.

From Los Angeles Times

In one of the greatest breakthroughs of the 20th century, he identified the double-helix structure of DNA in 1953 alongside a British scientist, Francis Crick, setting the stage for rapid advances in molecular biology.

From BBC