紡ぼう績せき糸いと

also: ぼうせきし

ぼ

う

せ

き

い

と

Meanings

1

noun

Technical term in textile manufacturing for yarn made by spinning fibers together.

ぼうせきし

糸いと
糸 is the general word for thread or yarn, while 紡績糸 specifically refers to yarn made by spinning.
紡ぼう績せき
紡績 means spinning (the process), while 紡績糸 is the resulting yarn.

Compound of 紡績 (spinning) and 糸 (thread). The reading ぼうせきし uses the on'yomi for both kanji, while ぼうせきいと mixes on'yomi and kun'yomi.