English ⇄ German

that is ['ðætɪz]
gen.	sprich; das ist (id est)
social.sc.	das heißt (id est)
tech.	nämlich
that is id est i.e. ['ðætɪz]
gen.	das heißt (d.h.)
that is i.e. ['ðætɪz]
gen.	das ist (id est)
that is to say ['ðætɪz]
gen.	das heisst (id est)
English thesaurus
that is ['ðætɪz]
gen.	in other words (on the first floor, that is, the floor at street level); to be precise; to be specific; for example; to be more accurate; used to introduce or follow a clarification, interpretation, or correction of something already said (He was a long-haired kid with freckles. Last time I saw him, that is. lexico.com)
abbr.	i.e.

that is: 308 phrases in 25 subjects

American usage, not spelling	1
Austrian usage	2
Business	10
Customs	6
Economy	8
Electronics	1
Figurative	2
Finances	6
Foreign trade	35
General	164
Informal	11
Insurance	2
International trade	1
Law	30
Mathematics	2
Medical	1
Metallurgy	5
Microsoft	2
Patents	7
Quotes and aphorisms	1
Rude	1
Slang	1
Social science	2
Taxes	6
Transport	1