द्रव (drav)
noun/adjective
A technical/scientific word for 'liquid' or 'fluid', mostly encountered in chemistry, physics, or medical contexts rather than casual kitchen talk (Hindi speakers usually just say पानी (paanii) or use the English word 'liquid' in daily life).
Sense
1
:
liquid, fluid
noun, masculine
Synonyms: तरल (taral)
Frequency: low
Cultural Note: You'll meet this word most on medicine bottles (द्रव औषधि, drav aushdhi, 'liquid medicine') or in school science textbooks describing states of matter -- ठोस (thos, solid), द्रव (drav, liquid), and गैस (gais, gas). It has the same formal flavor as saying 'fluid' instead of 'liquid' in English.
Common Mistakes: 1) Learners often reach for द्रव (drav) in everyday speech where a native speaker would just say पानी (paanii) or use the borrowed English word 'liquid'; द्रव (drav) sounds textbook-technical, like something from a chemistry class or a medicine label, not kitchen conversation.
Sample Sentences:
पानी एक द्रव है।
Water is a liquid.
(paanii ek drav hai।)
पदार्थ की तीन अवस्थाएँ होती हैं: ठोस, द्रव और गैस।
Matter has three states: solid, liquid, and gas.
(padaarth kii tiin avasthaaen hotii hain: thos, drav aur gais।)
डॉक्टर ने बच्चे को द्रव औषधि दी।
The doctor gave the child liquid medicine.
(doktar ne bachche ko drav aushdhi dii।)
बर्फ गरम करने पर द्रव में बदल जाती है।
When heated, ice turns into a liquid.
(barph garam karne par drav men badal jaatii hai।)
इस बोतल में कोई द्रव भरा हुआ है।
Some liquid is filled in this bottle.
(is botal men koii drav bharaa huaa hai।)
प्रयोगशाला में द्रव को सावधानी से मापिए।
Measure the liquid carefully in the laboratory.
(prayogshaalaa men drav ko saavdhaanii se maapie।)
अगर तापमान और बढ़ता तो यह द्रव भी वाष्प बन जाता।
If the temperature had risen further, this liquid would have turned into vapor too.
(agar taapmaan aur badhtaa to yah drav bhii vaashp ban jaataa।)
शिक्षक ने समझाया कि द्रव का कोई निश्चित आकार नहीं होता, केवल आयतन होता है।
The teacher explained that a liquid has no fixed shape, only a volume.
(shikshak ne samjhaayaa ki drav kaa koii nishchit aakaar nahiin hotaa, keval aaytan hotaa hai।)
Sense
2
:
liquid, fluid (as a descriptor)
adjective Used attributively before a noun, e.g. द्रव रूप (drav roop, 'liquid form').
Synonyms: तरल (taral)
Frequency: low
Cultural Note: This adjectival use pairs closely with its noun sense above -- both come from the same Sanskrit root meaning 'to melt or flow', which is why द्रव (drav) conceptually links liquid states to the idea of something that has 'become fluid'.
Sample Sentences:
बर्फ पिघलकर द्रव रूप में बदल जाती है।
Ice melts and changes into a liquid form.
(barph pighalkar drav roop men badal jaatii hai।)
यह पदार्थ कमरे के तापमान पर द्रव अवस्था में रहता है।
This substance remains in a liquid state at room temperature.
(yah padaarth kamre ke taapmaan par drav avasthaa men rahtaa hai।)
गैस को ठंडा करके द्रव बनाया गया।
The gas was cooled and turned into liquid.
(gais ko thandaa karke drav banaayaa gayaa।)
धातु को गर्म करते ही वह द्रव हो जाएगी।
As soon as the metal is heated, it will become liquid.
(dhaatu ko garm karte hii vah drav ho jaaegii।)
इस मिश्रण को द्रव अवस्था में रखिए, ठोस मत होने दीजिए।
Keep this mixture in a liquid state; do not let it become solid.
(is mishran ko drav avasthaa men rakhie, thos mat hone diijie।)
यदि तापमान बढ़ता तो यह ठोस पदार्थ द्रव हो जाता।
If the temperature had risen, this solid substance would have become liquid.
(yadi taapmaan badhtaa to yah thos padaarth drav ho jaataa।)
वैज्ञानिकों ने जांचा कि पदार्थ द्रव रूप में स्थिर रह सकता है या नहीं।
The scientists checked whether the substance could remain stable in liquid form or not.
(vaigyaanikon ne jaanchaa ki padaarth drav roop men sthir rah saktaa hai yaa nahiin।)
प्रयोगशाला में यह सुनिश्चित किया जाए कि नमूना द्रव अवस्था में ही रहे।
It should be ensured in the laboratory that the sample remains only in a liquid state.
(prayogshaalaa men yah sunishchit kiyaa jaae ki namoonaa drav avasthaa men hii rahe।)
Morphology
Noun
(sg.m.direct):
द्रव
(drav)
(sg.m.oblique):
द्रव
(drav)
(pl.m.direct):
द्रव
(drav)
(pl.m.oblique):
द्रवों
(dravon)
Adjective (invariant)
invariant:
द्रव
(drav)