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Mittellinie f =, -n
gen.	center line; half-way line football; median; halfway line football
agric.	vessel's centreline
construct.	neutral axis; neutral line
cyc.sport	midtrack line
econ.	center line (Qualitätskontrolle)
fish.farm.	mid-line
footb.	half-way line; halfway-line
gear.tr.	line of centers
grass.hock.	centre-line
handb.	halfway line
hockey.	middle line
med.	midline
phys.	bisector; bisectrix; central line
scient.	centerline
sport, bask.	division line
tab.tenn.	service-line
tech.	axis; centre line; roughness centerline
transp.	axis line
transp., avia.	mean line; centreline; median line

Mittellinie: 16 phrases in 8 subjects

Construction	2
Foreign trade	1
Industry	1
Microelectronics	1
Optics branch of physics	7
Physics	1
Transport	2
Water polo	1