The word-based description for "🔢➖1⃣🆚2⃣+4⃣9⃣2⃣-4⃣9⃣2⃣-1⃣=0⃣+0⃣+0⃣+1⃣🔁" is: "A numerical equation involving subtraction, addition, and repetition, where subtracting 1 from 2 and adding 492, then subtracting 492, and finally subtracting 1 again equals the sum of zero three times and the number 1 once."