What does the kanji 兆 mean?

兆 means portent, 10**12, trillion, sign, omen, symptoms.

兆

兆 — portent, 10**12, trillion, sign, omen, symptoms

Counting

兆ちょう

(1) sign; omen; indication; portent (2) 10^12; 1,000,000,000,000; trillion (American); (obs) billion (British)

暗くらい雲くもは雨あめの前兆ぜんちょうだ。

Dark clouds are a sign of rain.

あの雲くもは雨あめの前兆ぜんちょうだ。

That cloud bodes rain.

景気けいき回復かいふくの兆きざしが見みえている

The signs of economic recovery can be seen.