प्रयत्न लाघव मतलब [सं-पु.] - ऐसी युक्ति जिसमें किसी कार्य में लगने वाले समय या शक्ति की बचत हो।
Here is meaning of Prayatn Laghav in hindi. Get definition and hindi meaning of Prayatn Laghav. What is Hindi definition and meaning of Prayatn Laghav ? (hindi matlab - arth kya hai?).