** H < sub > 2 </ sub > O ( l ) + 240kJ → H < sub > 2 </ sub > O ( g )

** O Sapientia ( Roman Catholic Church )

** O Adonai

** O Rex

** O Radix

** O Clavis

** O Oriens

** O Uraguai by Basílio da Gama ( 1769 )

** Serial I / O (" Link cable "): 512 kbit / s with up to 4 connections in serial

** Infra-red I / O: Less than 2 m distance at 45 °

** Cartridge I / O

** Improved InnoDB I / O subsystem

** Malachy O ' More

** in notation related to Big O notation to describe the asymptotic behavior of functions.

** In notation related to Big O notation, the asymptotically dominant nature of functions

** I / O Port Interface and Control

** Asynch and Synch I / O

** A doubly linked list has O ( 1 ) insertion and deletion at both ends, so is a natural choice for queues.

** nitrous oxide ( N < sub > 2 </ sub > O ; " NOS ", " Laughing Gas ", " Whippets ", " Balloons ")

** " Using Samba "- E-book ( Published by O ' Reilly as ISBN 0-596-00256-4 )

** Spinel: MgAl < sub > 2 </ sub > O < sub > 4 </ sub >, after which this class of minerals is named

** Gahnite: ZnAl < sub > 2 </ sub > O < sub > 4 </ sub >

** Hercynite: FeAl < sub > 2 </ sub > O < sub > 4 </ sub >

** Cuprospinel: CuFe < sub > 2 </ sub > O < sub > 4 </ sub >

** Daniel Landa, Czech composer, singer, actor and rallye racer.

** Diego de Landa, Bishop of the Yucatán ( b. 1524 )

** Henry Draper Medal

** Joseph Draper ( J ), from December 6, 1832

** Jon Hamm – Mad Men as Don Draper

** Jon Hamm – Mad Men as Don Draper

** Jon Hamm – Mad Men as Don Draper

** Gustav Ernesaks, Estonian composer and a choir conductor ( b. 1908 )

** Requiem aeternam ( chorus and boys ' choir )

** Domine Jesu Christe ( boys ' choir )

** Hostias et preces tibi ( boys ' choir )

** Conclusion-Requiem Aeternam and Requiescant in Pace ( Organ, Boys ` choir and Mixed Chorus )

** Ho Yeow Sun 何耀珊 ( born in Singapore ; Hakka pronunciation: Ho Rheu San ), Singer ; First and only Asian singer to top the US Billboard Dance Chart and the UK MusicWeek Chart ; Performed the Olympic Hymn, which was sung in Mandarin for the first time, accompanied by a choir of Overseas Chinese from 16 different nationalities for 2008 Beijing Olympics

** Greg Hartman, John Jaszcz ( engineers ), Hezekiah Walker ( choir director ) & the LFT Church Choir for Love Is Live!

** Version for 4-part mixed choir a capella ( 1978 )

** Aviator's Hymn, for tenor, bass, choir, and organ

** 16-part mixed choir

** Gregg Smith ( choir director ), the Gregg Smith Singers & the Columbia Chamber Ensemble for Ives: New Music of Charles Ives

** Georg Solti ( conductor ), Margaret Hillis ( choir director ) & the Chicago Symphony Orchestra & Chorus for Verdi: Requiem

** Michael Tilson Thomas ( conductor ), Robert Page ( choir director ) the Cleveland Boys Choir & Cleveland Orchestra Chorus for Orff: Carmina Burana

** Georg Solti ( conductor ), Margaret Hillis ( choir director ), & the Chicago Symphony Orchestra & Chorus for Brahms: A German Requiem

** Georg Solti ( conductor ), Margaret Hillis ( choir director ) & the Chicago Symphony Orchestra & Chorus for Beethoven: Missa Solemnis

** Colin Davis ( conductor ), Russell Burgess, Arthur Oldham ( choir directors ) the Wandsworth School Boys Choir & the London Symphony Orchestra & Chorus for Berlioz: Requiem

** John Eliot Gardiner ( choir director ), the Monteverdi Choir & the Orchestre Révolutionnaire et Romantique for Berlioz: Messe Solennelle

** Milton Brunson ( choir director ) for Through God's Eyes performed by the Thompson Community Singers

** Hezekiah Walker ( choir director ) for Live in Atlanta at Morehouse College performed by the Love Fellowship Crusade Choir

** Georg Solti ( conductor ), Margaret Hillis ( choir director ) & the Chicago Symphony Orchestra & Chorus for Berlioz: La Damnation de Faust

** Myron Butler, Kirk Franklin & Robert Searight II ( choir directors ) for God's Property From Kirk Franklin's Nu Nation performed by God's Property

** James Levine ( conductor ), Margaret Hillis ( choir director ) & the Chicago Symphony Orchestra & Chorus for Brahms: A German Requiem

** Richard Condie ( choir director ) for " The Battle Hymn of the Republic " performed by the Mormon Tabernacle Choir directed by Richard Condie

** Robert Shaw ( choir director ) & the Robert Shaw Orchestra & Chorale for Bach: B Minor Mass