Princeton's WordNet

1. upstream(adverb)

   in the direction against a stream's current

2. upriver, upstream(adverb)

   toward the source or against the current

Wiktionary

1. upstream(Adverb)

   against the current

2. upstream(Adjective)

   in a direction against the flow of a current or stream; upriver

3. upstream(Adjective)

   involving exploration and pre-production rather than refining and selling

4. upstream(Adjective)

   in the direction from the client to the server

5. upstream(Adjective)

   towards the leading end (5'end) of a DNA molecule

Webster Dictionary

1. Upstream(adverb)

   toward the higher part of a stream; against the current

The New Hacker's Dictionary

1. upstream

   [common] Towards the original author(s) or maintainer(s) of a project. Used in connection with software that is distributed both in its original source form and in derived, adapted versions through a distribution (like the Debian version of Linux or one of the BSD ports) that has component maintainers for each of their parts. When a component maintainer receives a bug report or patch, he may choose to retain the patch as a porting tweak to the distribution's derivative of the project, or to pass it upstream to the project's maintainer. The antonym downstream is rare.

• stroom opAfrikaans
• ضِد التيّارArabic
• срещу течениетоBulgarian
• contra a correntePortuguese (BR)
• proti prouduCzech
• stromaufwärtsGerman
• op ad flodenDanish
• κόντρα στο ρεύμα (για ποτάμι)Greek
• río arriba, a contracorrienteSpanish
• ülesjõgeEstonian
• در خلاف جهت رودخانهFarsi
• ylävirtaanFinnish
• à contre-courantFrench
• בְּמַעֲלֵה הַנָהָרHebrew
• धारा के विपरीतHindi
• uzvodnoCroatian
• ár ellen (haladó)Hungarian
• ke huluIndonesian
• uppána/með ánniIcelandic
• contro correnteItalian
• 上流へJapanese
• 상류로Korean
• upe aukštyn, prieš srovęLithuanian
• augšup; pret straumiLatvian
• di hulu sungaiMalay
• stroomopwaartsDutch
• opp(over) elva, mot strømmenNorwegian
• w górę (np. rzeki)Polish
• در خلاف جهت رودخانهPersian
• بر خلافPashto
• contra a correntePortuguese
• în susul apeiRomanian
• вверх по течениюRussian
• proti prúduSlovak
• proti tokuSlovenian
• uzvodniSerbian
• uppströmsSwedish
• ทวนน้ำThai
• akıntıya karşı, kaynağına doğruTurkish
• 朝著(河流的)上游Chinese (Trad.)
• уверх по течіїUkrainian
• منبع کي جانبUrdu
• ngược dòngVietnamese
• 向上游（的）Chinese (Simp.)