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  2. Science, technology, engineering, and mathematics - Wikipedia

    en.wikipedia.org/wiki/Science,_technology...

    A high school student explains her engineering project to a judge in Sacramento, California, in 2015.. Science, technology, engineering, and mathematics (STEM) is an umbrella term used to group together the distinct but related technical disciplines of science, technology, engineering, and mathematics.

  3. Plant stem - Wikipedia

    en.wikipedia.org/wiki/Plant_stem

    A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves , flowers and fruits , transports water and dissolved substances between the roots and the shoots in the xylem and phloem , engages in photosynthesis, stores nutrients, and produces new living tissue. [ 1 ]

  4. Stem - Wikipedia

    en.wikipedia.org/wiki/Stem

    Stem, part of a compound variable in the Rexx computer programming language Stem (bicycle part) , connecting the handlebars to the steerer tube of a bicycle fork Stem (ship) , the most forward part of a boat or ship's bow

  5. Stem cell - Wikipedia

    en.wikipedia.org/wiki/Stem_cell

    Stem cell tourism is the part of the medical tourism industry in which patients travel to obtain stem cell procedures. [109] The United States has had an explosion of "stem cell clinics". [110] Stem cell procedures are highly profitable for clinics. The advertising sounds authoritative but the efficacy and safety of the procedures is unproven.

  6. Scanning transmission electron microscopy - Wikipedia

    en.wikipedia.org/wiki/Scanning_transmission...

    A scanning transmission electron microscope (STEM) is a type of transmission electron microscope (TEM). Pronunciation is [stɛm] or [ɛsti:i:ɛm]. Pronunciation is [stɛm] or [ɛsti:i:ɛm]. As with a conventional transmission electron microscope (CTEM), images are formed by electrons passing through a sufficiently thin specimen.

  7. Underground stem - Wikipedia

    en.wikipedia.org/wiki/Underground_stem

    A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes.Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems.