ricin

[ rahy-sin, ris-in ]

noun

, Chemistry.

1. a white, poisonous, protein powder from the bean of the castor-oil plant.

ricin

/ ˈrɪs-; ˈraɪsɪn /

noun

1. biochem a highly toxic protein, a lectin, derived from castor-oil seeds: used in experimental cancer therapy

ricin

/ rī′sĭn,rĭs′ĭn /

1. An extremely poisonous protein extracted from the castor bean. Ricin inhibits protein synthesis in cells, and is used as a biochemical reagent and in cancer research.

Word History and Origins

Origin of ricin¹

1895–1900; < New Latin Ricinus name of genus, Latin: castor-oil plant

Word History and Origins

Origin of ricin¹

C19: from New Latin Ricinus genus name, from Latin: castor-oil plant

Example Sentences

Soligenix said in the filing that Emergent informed it of the error in January 2020 and that HHS then declined in April 2020 to provide further funding for clinical trials of the ricin vaccine.

From Washington Post

The Post also found that the mishandling of the Johnson & Johnson vaccine followed an allegation of another serious error by Emergent on a separate vaccine project for ricin involving the same Baltimore plant.

From Washington Post

Soligenix, a company partnering with Emergent to develop a vaccine against ricin poisoning, said in a securities filing last August that Emergent had supplied it with drugs that were out of specification.

From Washington Post

The Soligenix-Emergent project was funded by a $21 million contract with HHS, and Soligenix has said it hopes to supply the ricin vaccine to the Strategic National Stockpile.

From Washington Post

Walter returns to the house to retrieve the vile of ricin he hid there in the previous finale.

From The Daily Beast

Jesse was relieved, and so was Walt—he had already concealed the real ricin capsule behind an electrical outlet in his bedroom.

From The Daily Beast

The signature of the ricin-laced envelope: “I am KC and I approve this message.”

From The Daily Beast

Could a mind-boggling vendetta be behind the ricin letters sent to Obama and Wicker?

From The Daily Beast

Kevin Curtis is nowhere near smart enough to figure out how to make ricin, she tells The Daily Beast.

From The Daily Beast

By George, though, that Paoli must be a clever one—think of his knowing about ricin.

From Project Gutenberg