Usage Note
Lanzar ends in -zar, so the yo preterite is lancé (z → c before e). It covers physically throwing (lanzar una pelota) and figuratively launching a product, campaign, or attack (lanzar un producto al mercado). The reflexive lanzarse means 'to throw oneself into, to leap': se lanzó al agua ('he jumped into the water').
Examples
"Lanzó la pelota con mucha fuerza."
Natural Translation
She threw the ball with great force.

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