第だい三さん次じだいさんじじ字FuriganaAudioMeanings1noun which may take the genitive case particle 'no', nounthe third; tertiaryUsed as a prefix-like noun modifier in formal or technical contexts, often in numbered series or classifications.第だい三さん次じ世せ界かい大たい戦せんが起おこるかもしれないと心しん配ぱいする人ひともいる。Break this sentence down in the analyzerSome people worry that World War III might break out.第だい三さん次じ産さん業ぎょうはサービス業ぎょうを中ちゅう心しんとする。Break this sentence down in the analyzerThe tertiary industry is centered on the service sector.