different between projection vs sill

English

Etymology

From either the Middle French projection or its etymon, the Classical Latin pr?iecti? (stem: pr?iecti?n-), from pr?ici?. Compare the Modern French projection, the German Projektion, and the Italian proiezione.

Pronunciation

• IPA^(key): /p???d??k??n/
• Rhymes: -?k??n

Noun

projection (countable and uncountable, plural projections)

1. Something which projects, protrudes, juts out, sticks out, or stands out.

   The face of the cliff had many projections that were big enough for birds to nest on.

2. The action of projecting or throwing or propelling something.
   1. (archaic) The throwing of materials into a crucible, hence the transmutation of metals.
3. (archaic) The crisis or decisive point of any process, especially a culinary process.
4. The display of an image by devices such as movie projector, video projector, overhead projector or slide projector.
5. A forecast or prognosis obtained by extrapolation
6. (psychology) A belief or assumption that others have similar thoughts and experiences as oneself
7. (photography) The image that a translucent object casts onto another object.
8. (cartography) Any of several systems of intersecting lines that allow the curved surface of the earth to be represented on a flat surface. The set of mathematics used to calculate coordinate positions.
9. (geometry) An image of an object on a surface of fewer dimensions.
10. (linear algebra) An idempotent linear transformation which maps vectors from a vector space onto a subspace.
11. (mathematics) A transformation which extracts a fragment of a mathematical object.
12. (category theory) A morphism from a categorical product to one of its (two) components.

Synonyms

• (something which sticks out): protuberance

Derived terms

Related terms

• project

Translations

Further reading

• projection on Wikipedia.Wikipedia

French

Pronunciation

Noun

projection f (plural projections)

1. projection
2. screening (of a film)

Interlingua

Noun

projection (plural projectiones)

1. projection

English

Pronunciation

• enPR: s?l, IPA^(key): /s?l/,
• Rhymes: -?l

Etymology 1

From Middle English sille, selle, sülle, from Old English syll, syl (“sill, threshold, foundation, base, basis”), from Proto-Germanic *sul? (“bar, sill”), from Proto-Indo-European *sel-, *swel- (“beam, board, frame, threshold”). Cognate with Scots sil, sill (“balk, beam, floor, sill”), Dutch zulle (“sill”), Low German Sull, Sülle (“threshold, ramp, sill”), Danish syld (“base of a framework building”), Swedish syll (“joist, cross-tie”), Norwegian syll, Icelandic syll, sylla (“sill”). Related also to German Schwelle ( > Danish svelle), Old Norse svill, Latin silva (“wood, forest”), Ancient Greek ??? (húl?).

Noun

sill (plural sills)

1. (architecture) (also window sill) breast wall; window breast; horizontal brink which forms the base of a window.

   She looked out the window resting her elbows on the window sill.

2. (construction) threshold; horizontal structural member of a building near ground level on a foundation or pilings, or lying on the ground, and bearing the upright portion of a frame. Wikipedia:Sill Plate
3. (geology) ridge; rise; horizontal layer of igneous rock between older rock beds.
   • 1980, U.S. Government Printing Office, Geological Survey Professional Paper, Volume 1119

     Minor palingenetic magmas probably were generated at this time and intruded the mantling rocks in the form of small sills and apophyses; […]

4. Threshold or brink across the bottom of a canal lock for the gates to shut against.
5. (anatomy) A raised area at the base of the nasal aperture in the skull.

   the nasal sill

6. (military, historical) The inner edge of the bottom of an embrasure.

Usage notes

Usually spelled cill when used in the context of canal or river engineering.

Quotations

• For quotations using this term, see Citations:sill.

Derived terms

• doorsill
• groundsill
• mudsill
• silled
• windowsill

Related terms

• lintel
• plate sense #13 (construction)

Translations

Etymology 2

Compare sile.

Noun

sill (plural sills)

1. (Britain) A young herring.

Etymology 3

Compare thill.

Noun

sill (plural sills)

1. The shaft or thill of a carriage.

Anagrams

• ills

Swedish

Etymology

From Old Norse síld, from Proto-Germanic *s?l?.

Pronunciation

• IPA^(key): /s?l/

Noun

sill c

1. a herring

Usage notes

• Herring from the Atlantic on Sweden's west coast is called sill. The subspecies fished from the Baltic Sea on Sweden's east coast is called strömming.

Declension

See also

• strömming

References

• Harris, Cyril M.. Illustrated dictionary of historic architecture. New York: Dover Publications, 1983, 1977. Groundsill ?ISBN

Welsh

Etymology

See the etymology of the main entry.

Noun

sill f (plural sillau or silloedd, not mutable)

1. Alternative form of sillaf (“syllable”)

Further reading

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present) , “sill”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies